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  • A Multifaceted Approach to Diabetic Foot Ulcer Healing Beyond HbA1c: A Prospective Observational Study in a Tertiary Care Hospital in Chennai

    A Multifaceted Approach to Diabetic Foot Ulcer Healing Beyond HbA1c: A Prospective Observational Study in a Tertiary Care Hospital in Chennai


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  • European Aerospace, Defence Strengthened by Political Focus on Defence – Fitch Ratings

    1. European Aerospace, Defence Strengthened by Political Focus on Defence  Fitch Ratings
    2. Europe prepares for war  Al Jazeera
    3. Breakingviews – Europe’s defence splurge can avoid economic flop  Reuters
    4. EU’s military-industrial fever – The gap between rhetoric and reality  Caliber.Az
    5. Fitch: European aerospace, defense strengthened  breakingthenews.net

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  • FL Studio 2025, as reviewed by a Logic Pro user

    FL Studio 2025, as reviewed by a Logic Pro user

    For almost as long as I’ve been alive, FL Studio has been a mainstay of music production, but as a Logic Pro user, I’ve always thought of ‘Fruity Loops’ as the scrappy cousin of the DAW family. With the arrival of the 2025 update, now seems like the perfect time to switch over and check out what’s on offer.

    With headphones on and coffee in hand, I dive in to find out why this venerable DAW has stood the test of time.

    Opening up a new project, I’m greeted by a sleek, sophisticated, and decidedly ‘pro-level’ looking UI. In the spirit of the software, I start with some looping sequences to get a sense of what FL Studio can do. Right away, I’m impressed by how easy I can get up and running with a basic groove.

    The piano roll is frictionless to use, with a brush tool that lets me simply ‘paint’ patterns into song arrangements. The automation features are equally well designed and make it quick to draw velocity and other parameters. There’s a powerful bank of stock plugins and samples too, most of which have easily accessible controls if you want to shape your sounds.

    FL Studio 2025 interface. Image: Press

    What is FL Studio Gopher?

    Getting the hang of those essential features is a breeze, but I must admit, I did have some help. Accompanying me on my journey was Gopher, Image-Line’s brand-new AI chatbot. This is my first big surprise, and a pleasant one at that. Gopher isn’t just a marketing gimmick; it’s a genuinely useful tool that teaches me the fundamentals of FL Studio faster than any DAW I’ve ever used.

    Dozens of annoying questions are met with helpful answers. ‘Where did my window disappear to?’, ‘How can I copy one plugin to another?’ and plenty of queries that begin with ‘What’s the shortcut for…’

    To be clear, you shouldn’t expect ChatGPT levels of performance here. The lag time between question and response is noticeably slow, but even with that limitation, Gopher saves me precious time that I might previously spend trawling SEO-stuffed blog posts or sifting through YouTube tutorials.

    Gopher in action in FL Studio 2025
    Gopher in action in FL Studio 2025. Image: Image-Line

    Recording in FL Studio 2025 is…meh

    However, even with a chatbot at my side, getting to grips with how FL Studio handles audio recording almost broke my brain.

    On any other DAW I’ve used, setting up a basic recording usually involves a couple of easy steps. In FL Studio, it’s a manual process that requires a fair bit of work just to create a recording channel in the first place.

    It’s not just audio either, even recording MIDI is a chore. During a recording, nothing appears in the Playlist arrangement, giving you no visual indication that you actually hit record. Clips of finished recordings can also sometimes appear in random places on the timeline, with no clear reason for their destination.

    In practice, this makes capturing a performance on a MIDI keyboard, or even using the computer keyboard as a live input, seem like much more trouble than it’s worth. Rather than lose the creative flow, I find myself regularly resorting to the mouse input to draw MIDI notes and program drum beats rather than using my MIDI keyboard.

    In 2025, this workflow feels less like a quirk and more like a limitation. By not updating this aspect of FL Studio (which many producers online have pointed out could be done better), Image-Line is reinforcing the programming and sequencing aspects of making music while placing unnecessary barriers to recording music with a microphone or MIDI keyboard.

    FL Studio 2025 sequencer, photo by press
    FL Studio 2025 sequencer. Image: Press

    But that sequencer is still iconic

    Since its release in 1998, the beating heart of FL Studio has always been its sequencer. Even in the current version, it’s hard to tell exactly where the sequencer ends and the DAW begins. On the one hand, this gives everything a strong rhythmic bent that is exceptionally well suited to electronic production styles like trap, hip-hop and EDM.

    However, this also means that FL Studio tends to steer you in these directions even when you don’t want it to. Technically, it has all the features you’ll find in any of the major competing DAWs, but the workflow is so oriented around gridlines, sequencing, and programming that my attempts to make some ambient music or bring in live audio feel uninspiring at best.

    Should you get FL Studio 2025?

    All that aside, FL Studio is still a very accessible DAW. Price-wise, there are four tiers, with the Producer Edition hitting the sweet spot at a very affordable price of £199.

    What makes this deal even sweeter is that for over 25 years, Image-Line has stood by its oft-quoted tagline: “Free updates since 1998”.

    It’s true — once you purchase FL Studio, you own it for life with free access to any future versions. Having lost my copy of Pro Tools when Avid shifted to a subscription-only plan and felt the sting of a macOS update robbing me of my old copy of Ableton Live, I love that FL Studio has stuck to this commitment.

    By comparison, Ableton Live 12 Standard is priced at £259, but you will eventually have to pay to upgrade to the next edition. Logic Pro comes in at a similar price of £199 and does have free updates, but the hidden premium lies in the cost of buying a Mac computer to run it in the first place.

    FL Studio 2025 mixer, photo by press
    FL Studio 2025 mixer. Image: Press

    The FL Cloud subscription — worth it?

    While the DAW itself may come with a permanent licence, FL Studio hasn’t sidestepped the subscription craze entirely.

    FL Cloud is an optional add-on at £8.99 or £12.50 per month for the Plus/Pro tiers, and gives you access to over a million royalty-free samples, third-party plugins, integrated music distribution with DistroKid, and AI mastering tools — all of which are built directly into the DAW.

    Even if you don’t subscribe, there are plenty of free samples in the catalogue you can rummage through.

    My verdict

    Overall, FL Studio goes deep but not necessarily wide.

    Its strong sequencing and programming capabilities are a lot of fun and feel creatively satisfying, but its unique workflow means that rhythmically focused production is still the best kind of music to make with it.

    As long as you’re on board with that there is plenty here to love: FL Cloud feels like good value for money, turning it into a one-stop creation and distribution platform, the utility of Gopher helps you learn the interface lightening fast, and FL Studios well-furnished catalogue of instruments, plugins, effects and samples is a great foundation for any new producer.

    Having gotten my first bite of FL Studio, I can’t wait to see what another 25 years of free updates will bring.

    Key features

    • Gopher: an integrated AI chatbot for answering FL Studio and music production questions
    • FL Cloud subscription includes additional sounds, plugins, effects, music distribution and AI mastering
    • Comes with 94 instruments and effects (Producer Edition)
    • Support for up to 500 tracks
    • Inbuilt stem separation tool
    • Lifetime free updates
    • Runs on Windows and MacOS
    Garling Wu

    Garling is a composer, sound artist, and contributing writer for MusicTech, with over a decade of experience making music. Endlessly fascinated by the possibilities of sound, she grabs whatever tech suits the moment, switching between hardwiring electronics, programming audio in Max and digging into plugins and synths.


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  • Garanti BBVA to adopt the Equator Principles

    Garanti BBVA to adopt the Equator Principles

    The move advances the bank’s longstanding commitment to sustainable finance and responsible banking. Since 2011, BBVA’s Turkish franchise has integrated environmental and social risk assessments into its credit evaluation processes. It now takes a significant step forward by formally aligning with the Equator Principles, a set of guidelines established in 2003 to promote the responsible financing of large-scale infrastructure and industrial projects across sectors.

    The Equator Principles framework includes ten guiding rules that span project risk categorization, environmental and social impact assessments, compliance with applicable standards, stakeholder engagement, and independent monitoring. The principles are widely used to evaluate and mitigate potential harm to communities, ecosystems, and cultural heritage in high-impact projects.

    “With this signature, we aim to set an example for the financial sector in our country,” said Mahmut Akten, CEO of Garanti BBVA. “We recognize the responsibility placed on the banking industry in building a more sustainable future. Adopting the Equator Principles is both a strategic milestone and a reflection of our global vision as part of the BBVA Group, which has supported the principles since 2004.” Akten emphasized that sustainability is embedded in the bank’s core operations, beyond its financial offerings. “This commitment shows that we consider environmental and social impact not as a regulatory obligation but as a key factor in every financing decision we make, from safeguarding biodiversity to supporting social inclusion and cultural preservation.”

    The principles apply to key sectors such as energy, transportation, and infrastructure, where environmental and social risks are often most pronounced. They are relevant for various financial structures, including project financing, advisory services, and refinancing.

    By becoming a signatory, BBVA’s Turkish unit now commits to embedding best-in-class risk management practices into the early stages of project evaluation and throughout the financing lifecycle. This includes requiring independent reviews, stakeholder consultation, grievance mechanisms, and regular reporting. The adoption not only strengthens the bank’s risk governance but reinforces its regional leadership in sustainable finance, positioning it as a benchmark in Türkiye’s financial sector.

    For further information about the Equator Principles and Garanti BBVA’s environmental and social risk management practices, please visit the bank’s website.

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  • Agatha Christie – Death on the Nile reveals its release date and Limited Edition

    Agatha Christie – Death on the Nile reveals its release date and Limited Edition

    Paris, July 17, 2025Microids and Microids Studio Lyon are thrilled to unveil the Limited Edition of Agatha Christie – Death on the Nile, set for release on September 25, 2025, on PlayStation 5, Xbox Series, Nintendo Switch, and PC.

    This modern adaptation of the Queen of Crime’s classic novel introduces a fresh narrative twist with two playable protagonists: the legendary Hercule Poirot and a brand-new character created for the game, detective Jane Royce.

    Players will alternate between the two characters, each offering a unique perspective on the unfolding investigation. Poirot’s razor-sharp logic combined with Royce’s intuition brings depth to the gameplay, as players cross-reference testimonies, interrogate suspects, and piece together every clue to uncover the truth.

    While remaining true to the spirit of the original novel, Agatha Christie – Death on the Nile presents a contemporary reimagining of the iconic story. Following in the footsteps of Agatha Christie – Murder on the Orient Express, the team at Microids Studio Lyon has crafted a one-of-a-kind adventure full of new surprises—even die-hard Christie fans won’t see them coming.

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  • Whole Genome Doubling Drives Ovarian Tumor Growth

    Whole Genome Doubling Drives Ovarian Tumor Growth

    Research led by Memorial Sloan Kettering Cancer Center (MSK) is shedding new light on how ovarian cancer evolves — insights that could help researchers develop more effective treatment strategies.

    While ovarian cancer diagnoses and deaths have decreased over recent decades, the disease remains a leading cause of cancer-related death in women. This is largely because the cancer often spreads at a microscopic level within the abdomen early on, resulting in diagnosis at an advanced stage when treatment is less effective.

    A new study, published July 16 in Nature, used single-cell sequencing and other techniques to examine a phenomenon known as “whole-genome doubling” in high-grade serous ovarian carcinoma (HGSOC), the most common and aggressive form of ovarian cancer.

    Whole-genome doubling (WGD) is a process in which all of the chromosomes in a cancer cell’s genome are duplicated, which can help the cancer cells become stronger and more adaptable, and therefore more resistant to treatments.

    “The paradox of WGD is that it can be both a driver and a barrier to cancer progression, depending on the context and timing of the event — in ovarian cancer, we observe WGD in the more advanced, difficult-to-treat cancers,” says MSK computational oncologist Andrew McPherson, PhD, a lead author of the study.

    The study, which was overseen by senior author Sohrab Shah, PhD, Chief of MSK’s Computational Oncology Service and Director of the Halvorsen Center for Computational Oncology, found that more than 65% of the ovarian cancer tumors they studied had a high level of whole-genome doubling and that these tumors were better able to suppress the patient’s normal immune response.

    “Our findings expand our understanding of ovarian cancer and stress the importance of considering whole-genome doubling in future treatment strategies,” says Dr. Shah, who is also the Nicholls-Biondi Chair at MSK. “This might include drugs that specifically target WGD as well as developing a better understanding of how WGD affects responses to our current treatments.”

    WGD-high tumors suppress immune responses

    Whole-genome doubling happens in more than 30% of solid cancers and is known to lead to increased rates of metastasis and drug resistance, as well as to poorer clinical outcomes.

    In order to study WGD’s impact on ovarian cancer in a nuanced way, the researchers used a technique called Direct Library Preparation (DLP) single-cell sequencing, which allowed them to look at differences between tens of thousands of individual cells. DLP sequencing revealed key subpopulations of cells that would otherwise get lost in bulk sequencing.

    The researchers analyzed more than 30,000 cells — representing 70 tumor samples from 41 patients with ovarian cancer who had not yet received any treatment. They categorized 66% of the tumors as WGD-high, meaning more than 8 out of 10 cells in a sample had undergone at least one instance of genome doubling.

    “After a cell experiences this doubling, we can see that there’s a profound increase in lost chromosomes and other molecular changes,” Dr. Shah says. “In these cells, we could see a higher rate of micronuclei — small, extra nuclei with fragments of DNA in them, which is an indication of what we call ‘chromosomal instability.’ These micronuclei often rupture, spilling DNA into the cells in a way that should set off alarm bells for the innate immune system.”

    But the study revealed that the WGD-high tumors develop ways to dampen immune responses, despite their high levels of instability — such as by repressing the STING pathway, which would normally activate immune cells to fight the cancer.

    “Surprisingly, we found WGD-low tumors are actually more visible to the immune system and more likely to trigger an inflammatory immune response,” Dr. McPherson adds.

    Mapping genome doubling in HGSOC sheds light on tumor evolution

    Mapping the doubling of genomes through single-cell sequencing also revealed new details about the evolution of ovarian cancer tumors.

    “The technique we developed allowed us to study how these tumors evolve,” Dr. McPherson says. “We were able to place the WGD events within the context of the evolutionary tree and say whether they’re on the trunk of the tree or how far along a branch they happen.”

    One of the key findings from the study was that WGD is an ongoing process. It can happen early in the development of a tumor or later in smaller groups of cancer cells. It can also happen multiple times in the same tumor.

    The study points to the need for additional research to understand how small environmental changes in the fallopian tubes — where high-grade serous ovarian cancer is believed to often originate — might influence the initiation of WGD events, Dr. McPherson notes.

    Collaboration was key

    The study would not have been possible without extensive collaboration and teamwork between computational researchers and the surgeons, pathologists, and oncologists at MSK who specialize in gynecologic cancers, led by Chief of Gynecologic Medical Oncology Carol Aghajanian, MD, and Chief of Gynecology Surgery Nadeem Abu-Rustum, MD, Dr. Shah says. Britta Weigelt, PhD and her lab were also vital to the project, collecting and reviewing tissue samples and processing them for sequencing. 

    “From identifying patients to collecting samples to analyzing them, it was truly a team effort,” Dr. Shah says.

    In addition, DLP sequencing is an especially difficult protocol to implement and required a team of technicians working long hours to complete each experiment, Dr. McPherson adds, noting the project would not have been possible without the dedication and expertise of Neeman Mohibullah, PhD, and her single-cell team at MSK’s Integrative Genomics Operations sequencing core.

    Several external collaborators were also integral to the project.

    The study was part of a broader initiative called MSK SPECTRUM, a multidisciplinary effort to harness MSK’s computational expertise to study ovarian cancer evolution, treatment, and response. The current study builds on previous research from the project that also was published in Nature.

    Reference: McPherson A, Vázquez-García I, Myers MA, et al. Ongoing genome doubling shapes evolvability and immunity in ovarian cancer. Nature. 2025:1-10. doi: 10.1038/s41586-025-09240-3

    This article has been republished from the following materials. Note: material may have been edited for length and content. For further information, please contact the cited source. Our press release publishing policy can be accessed here.

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  • Who is leading The 153rd Open

    Who is leading The 153rd Open

    This live report will be updated throughout the Championship with details of who is leading The 153rd Open. Follow live scoring here and our live blog here. You can also watch live streams, highlights and feature videos on R&A TV.

    Jacob Skov Olesen holds the outright lead on the first morning of The 153rd Open at Royal Portrush.

    As the first rain of the day blew across the Dunluce Links, Lee Westwood, who came through Final Qualifying at Dundonald Links, became the first player to make it to three-under, following birdies at the 2nd and 5th with another at the par-5 7th.

    Yet the veteran Englishman was then replaced as leader by 2024 Amateur Champion Olesen, who eagled the 12th to reach four-under-par.

    China’s Haotong Li joined Westwood on three-under, courtesy of birdies on the 5th, 7th and 10th.

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  • Buffer reveals its latest data on best social content formats

    Buffer reveals its latest data on best social content formats

    Social-media firm Buffer has plenty of data on what posts work (and don’t) across the big platforms. Now it has shared tips for the best content formats across TikTok, Instagram, Facebook, Threads, LinkedIn and X.

    You can read the full post here, but highlights include the news that we may need to stop calling TikTok a ‘short video’ app, as carousel photo-posts and text posts are “proving surprisingly competitive” in how many views they get.

    This is based on an analysis of 1m TikTok posts sent through Buffer’s social-media management tools.

    As for Instagram, reels continue to generate the most reach on average , but carousels also perform strongly – and when Buffer measured engagement rather than just reach, carousels actually came out on top.

    (For more on how Instagram’s different formats work, read our report on a talk last November by Meta exec Dan Biddle, in which he broke everything down.)

    Other findings from Buffer’s study include photos outperforming videos on Threads; images still reigning supreme on Facebook too; and text still seeing more engagement by some distance than other formats on X.


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  • The World’s Active Douglas DC-8s In 2025

    The World’s Active Douglas DC-8s In 2025

    The Douglas DC-8, often referred to as the McDonnell Douglas DC-8, is an early long-range commercial aircraft. The narrowbody aircraft was one of the first jet-powered aircraft to be used for commercial service. Originally, it was designed to be used as an aerial refueling tanker aircraft by the United States Air Force. However, after it lost the competition to the Boeing KC-135 Stratotanker, Douglas decided to market the aircraft for civil use.

    The aircraft saw significant success in the industry, as it was used heavily by a wide variety of airlines around the world. Since the aircraft was introduced in the late 1950s, it makes sense that the majority of these aircraft have been retired and scrapped. However, there are still quite a few Douglas DC-8s left that are currently flying. Let’s take a closer look at this legendary aircraft, as well as the three remaining aircraft that are currently in service.

    A Brief History Of The Douglas DC-8

    Hawaiian_Airlines_-_Douglas_DC-8_(50510674511)

    Photo: Aero Icarus | Wikimedia Commons

    As previously mentioned, the Douglas DC-8 was Douglas’s first jet-powered commercial airliner. The company first began designing the DC-8 for the USAF’s requirement for a jet-powered aerial refueling tanker in the early 1950s. However, the USAF picked the rival Boeing KC-135 Stratotanker for the role in May 1954. The following year, in June 1955, Douglas decided to realign the aircraft and market it to civil operators.

    The company made several design changes to the DC-8 that would improve its operating ability in the commercial industry. Douglas believed the aircraft could compete with Boeing’s commercial jet entry, the Boeing 707. This was found to be true when Pan American World Airways placed an order for 25 DC-8s in October 1955. Other airlines around the world, such as National Airlines, KLM, Eastern Air Lines, United Airlines, and Japan Air Lines, among others, followed Pan Am and ordered the DC-8 instead of the Boeing 707.

    Douglas was slower to introduce the DC-8 than Boeing was with the Boeing 707. However, the aircraft was eventually certified by the Federal Aviation Administration (FAA) in August 1959. The aircraft officially entered commercial service with both Delta Air Lines and United Airlines on September 18, 1959. Since then, over 550 DC-8s have been built and introduced, with production ranging from 1958 through 1972. As these aircraft have aged, the majority of the DC-8 fleet has been moved from commercial airline service into cargo operations. Eventually, even cargo operators, such as UPS Airlines, began to retire the aircraft from service.

    Design Features And Performance Specifications Of The Douglas DC-8

    	Douglas DC-8-51 N821E of Delta Airlines at Miami International in 1971

    Photo: RuthAS l Wikipedia Commons

    The early DC-8 design was focused on winning the USAF contract for a jet-powered aerial refueling tanker. After losing the contract, Douglas made several design improvements and upgrades to the DC-8 to make it more viable for commercial airline operations. The De Havilland Comet, which was the first jet airliner, struggled in the industry in the 1950s, mostly due to rapid metal fatigue failure caused by cabin pressurization. Because of this, Douglas paid significant attention to the design of the DC-8’s pressurized cabin.

    The original DC-8 design featured a low-wing configuration with a 30-degree wing sweep. Douglas also decided to power the aircraft with four Pratt & Whitney JT3C turbojet engines. These engines each provided the aircraft with up to 13,500 pounds of thrust. Overall, this helped the first aircraft variant, the Series 10, achieve the following performance specifications:

    Length

    150.7 feet

    Height

    42.6 feet

    Wingspan

    142.4 feet

    Maximum takeoff weight (MTOW)

    273,000 pounds

    Cruise speed

    483 knots (556 miles per hour)

    Range

    3,760 nautical miles (4,330 miles)

    Service ceiling

    41,000 feet

    The DC-8 fuselage also featured a double-bubble cross-section that was later widened to allow six-abreast seating inside the aircraft. The wider fuselage allowed the first Series 10 DC-8 to accommodate up to 177 passengers. Later variants would be able to seat up to 260 passengers, depending on the configuration. Douglas also added engine thrust reversers, leading edge slots, and larger wingtips to help improve its aerodynamic performance as a commercial airliner.

    Related

    Throwback: When A Douglas DC-8 Broke The Sound Barrier In 1961

    The DC-8 performed a dive at altitude to achieve the feat, accompanied by the original record breaker, Chuck Yeager.

    Previous Operators Of The Douglas DC-8

    Several prominent airlines around the world utilized the Douglas DC-8 when it was first introduced. The DC-8 competed heavily with the Boeing 707, as airlines would typically choose one or the other when expanding their fleets. The long fuselage of later DC-8 variants, such as the Series 61 and Series 63, had a capacity of up to 269 passengers. This was the largest passenger-carrying capacity at the time and made it one of the most popular choices for airlines.

    The first airline to order the DC-8 was Pan American World Airways, placing an order for 25 aircraft. Many airlines around the world followed suit, eventually placing orders for hundreds of aircraft and directly rivaling the Boeing 707. Even so, the DC-8 was launched simultaneously with United Airlines and Delta Air Lines. Douglas also received an order for nearly 20 DC-8s from another popular US airline, Eastern Air Lines. Some of the most popular operators of the DC-8 include:

    Airline

    Total DC-8s Ordered

    United Airlines

    40 aircraft

    Delta Air Lines

    30 aircraft

    Pan Am

    25 aircraft

    Air Canada

    88 aircraft

    Scandinavian Airlines (SAS)

    18 aircraft

    Eastern Air Lines

    17 aircraft

    Japan Airlines

    51 aircraft

    The Douglas DC-8 also saw significant success outside the US. Air Canada, KLM Royal Dutch Airlines, Scandinavian Airlines (SAS), and Japan Airlines were prominent early users. Eventually, many other international operators, such as Aerolíneas Argentinas, Alia Royal Jordanian, and South African Airways, would later incorporate the DC-8 into their fleets. The DC-8 was later converted from commercial use into cargo operations. FedEx, UPS Airlines, and DHL all operated large fleets of aging DC-8s into the 1990s and early 2000s.

    The First Trans Air Cargo Service Douglas DC-8

    Arrow Air DC-8-62F; N810BN

    Photo: Aero Icarus | Wikimedia Commons

    According to ATDB.aero, as of June 2025, there are only three Douglas DC-8s left in operation. The majority of the existing aircraft have been retired and replaced with newer jet airliners or other cargo aircraft. Two of these aircraft are currently flown by Trans Air Cargo Service. This company is a freight forwarding service that is located in Kinshasa, Democratic Republic of Congo. Trans Air Cargo Service was first founded in 1992, over thirty years ago, by Jacques “Kiki” Lemaire. It first began operating under the name Transair Cargo, and it was initially based at N’Djili Airport (FIH) in the Democratic Republic of Congo.

    The older Douglas DC-8 that is flown by Trans Air Cargo Service is registered as 9S-AJG. According to ch-aviation, this aircraft has a manufacturing serial number of 46110. It was originally built in 1969, giving it an age of just under 56 years. Trans Air Cargo Service has been operating this specific DC-8 since July 2008. Interestingly enough, this DC-8 also operates with its original Pratt & Whitney JT3D engines.

    This DC-8 was first delivered to United Airlines in September 1969. The airline operated this DC-8 until 1982, when it was transferred to Arrow Air, a defunct cargo carrier. The aircraft has been transferred between several different operators since the late 1980s. This includes stints flying with Air Transport International, Antillana de Navegación Aerea, Líneas Aéreas Paraguayas, Rich International, Fine Air, and, most recently, African International Airways, which flew the aircraft from July 2005 to July 2007.

    Related

    The DC-8: The 1st Douglas Jetpowered Passenger Plane

    The design of the Douglas DC-8 was a masterpiece of early jet-age engineering, blending functionality with elegance.

    The Second Trans Air Cargo Service Douglas DC-8

    N990CF_DC-8-62_F_Emery_Worldwide_MAN_JUN92_(5586273513)

    Photo: Ken Fielding | Wikimedia Commons

    Trans Air Cargo Service also operates the second Douglas DC-8 that is left operating today. Trans Air Cargo Service has been flying this aircraft since November 2011. This was one of the first aircraft that Trans Air Cargo Service acquired after it moved back to the Democratic Republic of Congo. The company was briefly forced to cease operations in 1998 after the outbreak of the Second Congo War. The company briefly operated as TAC Air Services in South America before returning as Trans Air Cargo Service in 2004 under Max Lemaire, the son of its founder, Kiki Lemaire.

    Currently, Trans Air Cargo Service only operates two aircraft, both of which are Douglas DC-8s. According to ch-aviation, the second aircraft it operates is registered as 9S-AJO. This aircraft has a manufacturing serial number of 46133 and was first delivered in March 1971. This makes the aircraft just over 54 years old.

    This specific Douglas DC-8 was first delivered to World Airways in March 1971, which operated the aircraft until January 1983. Since then, the aircraft has changed hands between several different operators. This includes Capitol International Airways, Viasa, and Emery Worldwide. Most recently, Gestair Cargo flew the aircraft from July 2002 to November 2011, before it was transferred to Trans Air Cargo Service.

    The Samaritan’s Purse Douglas DC-8

    Samaritan's_Purse.DC-8.N782SP.2

    Photo: Ryan kirk | Wikimedia Commons

    The operator of the final Douglas DC-8 still in service is Samaritan’s Purse. This company is an evangelical Christian humanitarian aid organization. The Boone, North Carolina-based organization flies several aircraft to provide aid to people in physical need around the world. Samaritan’s Purse was originally founded by Baptist pastor Bob Pierce in 1970. Since then, the company has grown to provide support for several ongoing ministries around the world, including providing safe drinking water in the developing world and responding to emergencies around the world.

    The company operates the third and final DC-8 in operation alongside its Boeing 767, Dassault Falcon 900EX, two Gulfstream G550s, and a Cessna Skycourier. According to ch-aviation, the Samaritan’s Purse DC-8 is currently listed as inactive, as it undergoes maintenance. This aircraft is registered as N782SP and has a manufacturing serial number of 46013. The aircraft was first delivered in early 1969, making the DC-8 56.5 years old.

    This specific DC-8 was first delivered to Finnair in January 1969. The airline flew the aircraft until November 1981. It was later flown by several other operators, including Armée de l’Air, Air Transport International, SkyBus Jet Cargo, and, most recently, Heavylift Cargo Airlines. Samaritan’s Purse took delivery of the DC-8 in March 2015 and has been flying the aircraft ever since.

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  • Free Floating or Merely Detached?

    Free Floating or Merely Detached?

    Example evolution of an unstable system with 5 one-Neptune-mass planets. Top: the semi-major axes of individual planets are plotted as solid lines. Orbits’ radial extents between pericenter and apocenter are indicated by the corresponding shaded regions. The black dashed line indicates the semi-major axis of an orbit with the same binding energy as the initial five-planet system. Bottom: planets’ orbital inclinations, measured relative to the system’s initial invariable plane, as functions of time. — astro-ph.EP

    Microlensing surveys suggest the presence of a surprisingly large population of free-floating planets, with a rate of about two Neptunes per star.

    The origin of such objects is not known, neither do we know if they are truly unbound or are merely orbiting at large separations from their host stars. Here, we investigate planet-planet scattering as a possible origin through numerical simulations of unstable multi-planet systems.

    We find that planet ejection by scattering can be slow, often taking more than billions of years for Neptune-mass scatterers orbiting at a few AU and beyond. Moreover, this process invariably delivers planets to orbits of hundreds of AU that are protected from further scattering.

    We call these “detached” planets. Under the scattering hypothesis, we estimate that about half of the reported “free-floating” Neptunes are not free but merely “detached”.

    Sam Hadden, Yanqin Wu

    Comments: Submitted to AAS Journals
    Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Astrophysics of Galaxies (astro-ph.GA)
    Cite as: arXiv:2507.08968 [astro-ph.EP] (or arXiv:2507.08968v1 [astro-ph.EP] for this version)
    https://doi.org/10.48550/arXiv.2507.08968
    Focus to learn more
    Submission history
    From: Sam Hadden
    [v1] Fri, 11 Jul 2025 18:54:17 UTC (721 KB)
    https://arxiv.org/abs/2507.08968

    Astrobiology,

    Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻

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