Noi sisteme care disting între forțele inamice și cele prietenoase au fost expuse de o companie israeliană
Acele arme se încruntă cu adevărat. Cu toate acestea, Lantac pare să facă niște pistoale Glock 17 (G17) și Glock 19 (G19) Grid 19 (G19) destul de slick și Razorback, care merită verificate, bazându-ne pe întâlnirea cu SHOT Show 2018. La urma urmei, nu există prea multe pistoale personalizate / personalizate Glock în colecția ta. Pur și simplu nu puteți exagera în această privință.
DefenseReview (DR) readers may already be aware that the Nous Defions Arsenal Democracy custom Glock-type pistols are currently our favorite Glock-type pistols, and that our latest favorite is their ND-AD Blackside 19MC (Mayhem Carry) compact 9mm combat/tactical Glock 19 (G19)-type pistol with SWiTCH Trigger and Mayhem Syndicate Carry Compensator Mk2. Well, if they aren’t (aware of that), they are now. Those guns really rock. However, Lantac would appear to be making some pretty slick Razorback complete custom Glock 17 (G17) and Glock 19 (G19) pistols and slide groups as well that are definitely worth checking out, based on our encounter with them at SHOT Show 2018.. After all, there’s no such thing as too many custom/customized Glock pistols in your collection. You simply can’t overdo it in that regard.
So, it was with that spirit that DR asked Jamie Franks of Lantac to take us through their latest and greatest Glock products at the booth, and we really liked what we saw, particularly the gun(s) set up with a suppressor-ready threaded barrel that was also crowned (nice touch). Everything felt and looked good on the Lantac Glocks that we handled, particularly the one shown in DR’s video below. Everything on that gun looked well-curated/chosen, including the Trijicon RMR red dot sight combat optic, which comes with both the complete pistol and complete slide packages.
Lantac also makes their own branded parts for Glock pistols, and all of those look interesting, as well.
Editor’s Note: Defense Review hasn’t shot the Lantac guns yet, so we’re only going off the guns’ feel and aesthetics at the moment, but both of those bode well for them. Our primary caveat at present is the reliability/durability of the Lantac E-CTG9 Upgrade Glock 17/19 Gen1-4 Trigger, since there are supposed high-end aftermarket Glock triggers out there that are a bit lacking in that aspect, particularly under hard use and high round count. The E-CTG9 may be terrific. We just don’t know yet.
Company Contact Info:
LANTAC USA LLC
1300 Forum Way, Suite B
Fort Worth, Texas 76140
Phone: 1.817.420.6011
Email: [email protected]
Website: https://www.lantac-usa.com
Prima aplicație de produs pe care am dezvoltat-o folosind tehnologia noastră compozită GCL este armura de corp flexibilă
Grafenul este un material foarte conductiv care ar putea fi folosit pentru a acoperi orice suprafață. Înțelegerea modului în care comportamentul său variază în funcție de substratul pe care este pus este esențial pentru aplicațiile sale viitoare, mai ales în domeniul neurologic”, continuă Scaini proprietățile unice ale grafenului este natural să se gândească, de exemplu, la dezvoltarea unor electrozi inovatori de stimulare cerebrală sau dispozitive vizuale „.Grafenul este cel mai subțire material bi-dimensional disponibil astăzi, caracterizat de proprietăți incredibile ale conductivității, flexibilității și transparenței. Deși există așteptări mari pentru aplicațiile sale în domeniul biomedicalei, foarte puține lucrări au analizat interacțiunile cu țesutul neuronal.
| Posted: Jun 12, 2018 | |
Neurons communicate better with graphene carpets(Nanowerk News) A work led by SISSA and published in Nature Nanotechnology („Single-layer graphene modulates neuronal communication and augments membrane ion currents”) reports for the first time experimentally the phenomenon of ion ‘trapping’ by graphene carpets and its effect on the communication between neurons. |
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| The researchers have observed an increase in the activity of nerve cells grown on a single layer of graphene. Combining theoretical and experimental approaches they have shown that the phenomenon is due to the ability of the material to ‘trap’ several ions present in the surrounding environment on its surface, modulating its composition. | |
| Graphene is the thinnest bi-dimensional material available today, characterised by incredible properties of conductivity, flexibility and transparency. Although there are great expectations for its applications in the biomedical field, only very few works have analysed its interactions with neuronal tissue. | |
| A study conducted by SISSA – Scuola Internazionale Superiore di Studi Avanzati, in association with the University of Antwerp (Belgium), the University of Trieste and the Institute of Science and Technology of Barcelona (Spain), has analysed the behaviour of neurons grown on a single layer of graphene, observing a strengthening in their activity. | |
| Through theoretical and experimental approaches the researchers have shown that such behaviour is due to reduced ion mobility, in particular of potassium, to the neuron-graphene interface. This phenomenon is commonly called ‘ion trapping’, already known at theoretical level, but observed experimentally for the first time only now. | |
| „It is as if graphene behaves as an ultra-thin magnet on whose surface some of the potassium ions present in the extra cellular solution between the cells and the graphene remain trapped. It is this small variation that determines the increase in neuronal excitability” comments Denis Scaini, researcher at SISSA who has led the research alongside Laura Ballerini. | |
| The study has also shown that this strengthening occurs when the graphene itself is supported by an insulator, like glass, or suspended in solution, while it disappears when lying on a conductor. | |
| „Graphene is a highly conductive material which could potentially be used to coat any surface. Understanding how its behaviour varies according to the substratum on which it is laid is essential for its future applications, above all in the neurological field” continues Scaini, „considering the unique properties of graphene it is natural to think for example about the development of innovative electrodes of cerebral stimulation or visual devices”. | |
| It is a study with a double outcome. Laura Ballerini comments as follows: „This ‘ion trap’ effect was described only in theory. Studying the impact of the ‘technology of materials’ on biological systems, we have documented a mechanism to regulate membrane excitability, but at the same time we have also experimentally described a property of the material through the biology of neurons.” |
| Source: Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Oamenii de știință de la EPEL au dezvăluit o modalitate rapidă și eficientă de a genera fibre super-elastice de înaltă performanță care pot fi utilizate într-o varietate de aplicații
Graphene Composites (GC) se apropie acum de ținta de finanțare a celei de-a patra campanii
Există o cerere imensă pentru noile tehnologii de detectare în infraroșu cu sensibilitate ridicată. Această lucrare a lui Efetov și co-lucrătorilor care raportează un bolometru inovator de grafen, integrat într-o cavitate de cristal fotonic pentru a obține o absorbție ridicată, este oportună și interesantă.
| Posted: Jun 11, 2018 | |
New graphene bolometer is faster, simpler, and covers more wavelengths(Nanowerk News) Bolometers, devices that monitor electromagnetic radiation through heating of an absorbing material, are used by astronomers and homeowners alike. But most such devices have limited bandwidth and must be operated at ultralow temperatures. Now, researchers say they’ve found a ultrafast yet highly sensitive alternative that can work at room temperature — and may be much less expensive. |
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| The findings, published in the journal Nature Nanotechnology („Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out”), could help pave the way toward new kinds of astronomical observatories for long-wavelength emissions, new heat sensors for buildings, and even new kinds of quantum sensing and information processing devices, the multidisciplinary research team says. The group includes recent MIT postdoc Dmitri Efetov, Professor Dirk Englund of MIT’s Department of Electrical Engineering and Computer Science, Kin Chung Fong of Raytheon BBN Technologies, and colleagues from MIT and Columbia University. | |
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| Schematic illustration of the experimental setup. (Image: Courtesy of the researchers) | |
| “We believe that our work opens the door to new types of efficient bolometers based on low-dimensional materials,” says Englund, the paper’s senior author. He says the new system, based on the heating of electrons in a small piece of a two-dimensional form of carbon called graphene, for the first time combines both high sensitivity and high bandwidth — orders of magnitude greater than that of conventional bolometers — in a single device. | |
| “The new device is very sensitive, and at the same time ultrafast,” having the potential to take readings in just picoseconds (trillionths of a second), says Efetov, now a professor at ICFO, the Institute of Photonic Sciences in Barcelona, Spain, who is the paper’s lead author. “This combination of properties is unique,” he says. | |
| The new system also can operate at any temperature, he says, unlike current devices that have to be cooled to extremely low temperatures. Although most actual applications of the device would still be done under these ultracold conditions, for some applications, such as thermal sensors for building efficiency, the ability to operate without specialized cooling systems could be a real plus. “This is the first device of this kind that has no limit on temperature,” Efetov says. | |
| The new bolometer they built, and demonstrated under laboratory conditions, can measure the total energy carried by the photons of incoming electromagnetic radiation, whether that radiation is in the form of visible light, radio waves, microwaves, or other parts of the spectrum. That radiation may be coming from distant galaxies, or from the infrared waves of heat escaping from a poorly insulated house. | |
| The device is entirely different from traditional bolometers, which typically use a metal to absorb the radiation and measure the resulting temperature rise. Instead, this team developed a new type of bolometer that relies on heating electrons moving in a small piece of graphene, rather than heating a solid metal. The graphene is coupled to a device called a photonic nanocavity, which serves to amplify the absorption of the radiation, Englund explains. | |
| “Most bolometers rely on the vibrations of atoms in a piece of material, which tends to make their response slow,” he says. In this case, though, “unlike a traditional bolometer, the heated body here is simply the electron gas, which has a very low heat capacity, meaning that even a small energy input due to absorbed photons causes a large temperature swing,” making it easier to make precise measurements of that energy. Although graphene bolometers had previously been demonstrated, this work solves some of the important outstanding challenges, including efficient absorption into the graphene using a nanocavity, and the impedance-matched temperature readout. | |
| The new technology, Englund says, “opens a new window for bolometers with entirely new functionalities that could radically improve thermal imaging, observational astronomy, quantum information, and quantum sensing, among other applications.” | |
| For astronomical observations, the new system could help by filling in some of the remaining wavelength bands that have not yet had practical detectors to make observations, such as the “terahertz gap” of frequencies that are very difficult to pick up with existing systems. “There, our detector could be a state-of-the-art system” for observing these elusive rays, Efetov says. It could be useful for observing the very long-wavelength cosmic background radiation, he says. | |
| Daniel Prober, a professor of applied physics at Yale University who was not involved in this research, says, “This work is a very good project to utilize the many benefits of the ultrathin metal layer, graphene, while cleverly working around the limitations that would otherwise be imposed by its conducting nature.” He adds, “The resulting detector is extremely sensitive for power detection in a challenging region of the spectrum, and is now ready for some exciting applications.” | |
| And Robert Hadfield, a professor of photonics at the University of Glasgow, who also was not involved in this work, says, “There is huge demand for new high-sensitivity infrared detection technologies. This work by Efetov and co-workers reporting an innovative graphene bolometer integrated in a photonic crystal cavity to achieve high absorption is timely and exciting.” |
| Source: By David Chandler, MIT |
Oamenii de stiinta din armata au dovedit o predictie veche de zeci de ani ca amestecarea TNT si nanoparticulele de aluminiu noi pot spori semnificativ performantele energetice. Această descoperire explozivă se așteaptă să extindă puterea de foc a armatei americane în luptă.
Cercetătorii de la Laboratorul de Cercetare US Army si Universitatea Texas Tech a demonstrat până la accesoriu 30 la suta in viteza de detonare a TNT exploziv prin adaugarea nanoparticule noi de aluminiu, în care învelișul de alumină nativă a fost înlocuită cu o sare oxidantă numită AIH sau iodat de aluminiu hexahidrat.
| Posted: Jun 11, 2018 | |
Scientists have a blast with aluminum nanoparticles(Nanowerk News) Army scientists proved a decades-old prediction that mixing TNT and novel aluminum nanoparticles can significantly enhance energetic performance. This explosive discovery is expected to extend the reach of U.S. Army firepower in battle. |
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| Researchers from the U.S. Army Research Laboratory and Texas Tech University demonstrated up to 30-percent enhancement in the detonation velocity of the explosive TNT by adding novel aluminum nanoparticles in which the native alumina shell has been replaced with an oxidizing salt called AIH, or aluminum iodate hexahydrate. | |
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| This is a single nanoparticle extracted out from a view of native aluminum particles at 150,000 magnification. The image highlights the amorphous oxide shell surrounding the crystalline core. (Image: U.S. Army Research Laboratory) | |
| The structure of the AIH-coated aluminum nanoparticles was revealed for the very first time through high resolution transmission electron (TEM) microscopy performed by ARL’s Dr. Chi-Chin Wu, a materials researcher who leads the plasma research for the lab’s Energetic Materials Science Branch in the Lethality Division of Weapons and Materials Research Directorate. | |
| Wu said this revolutionary research offers the potential for the exploitation of aluminum and potentially other metallic nanoparticles in explosive formulations to extend the range and destructive power of Army weapons systems, a key objective of the Army’s „Long Range Precision Fires” modernization priority. | |
| „We believe these results show tremendous promise for enhancing the detonation performance of conventional military explosives with aluminum nanoparticles for the first time,” said ARL’s Dr. Jennifer Gottfried, a physical chemist who collaborated on the research. | |
| „It is very exciting to advance science to a point where we can harness more chemical energy from metal particles at faster timescales. This is an exciting time for transforming energy generation technology,” said Dr. Michelle L. Pantoya, the J. W. Wright Regents Chair in Mechanical Engineering and Professor at Texas Tech University. | |
| Details of this breakthrough work are described in the team’s May 28 published paper „Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)” by Jennifer L. Gottfried, Dylan K. Smith, Chi-Chin Wu, and Michelle L. Pantoya in Scientific Reports(„Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)”). | |
| The team found that the crystalline aluminum core was effectively protected against unwanted oxidation by the AIH shell, which appears as protruding nodules on the aluminum surface. The enhanced reactivity due to this unique morphological feature and novel core-shell structure was demonstrated by laser-induced air shock from energetic materials experiments, an innovative laboratory-scale energetic testing method developed by Gottfried. This technique involves impacting the sample with a high-energy, focused laser pulse to violently break apart the explosive molecules. The interaction of the laser with the material forms a laser-induced plasma and produces a shock wave that expands into the surrounding air. The energy released from an explosive sample can then be experimentally determined by measuring the laser-induced shock velocity with a high-speed camera. | |
| It was predicted decades ago that aluminum nanoparticles have the potential to enhance the energetic performance of explosives and propellants because of their high energy content and potential for rapid burning. This is because they have exceptionally large surface areas compared to their total volume and a very large heat of reaction. However, the surface of the aluminum nanoparticles is naturally oxidized in air to form a thick alumina shell, typically 20% by weight, which not only lowers the energy content of the nanoparticles by reducing the amount of active aluminum, it also slows the rate of energy release because it acts as a barrier to the reaction of the aluminum with the explosive. Therefore, replacing the oxide shell, as successfully achieved by TTU, can significantly improve the explosive performance. | |
| These preliminary joint efforts have also led to a formal research collaboration under an ARL Director’s Research Award, the fiscal 2018 External Collaboration Initiative between Wu and TTU. | |
| After publishing two papers in high-impact scientific journals in the past year, the team is poised to pursue additional energetics research with aluminum nanoparticles by working with the U.S. Army Research, Development and Engineering Command at Picatinny Arsenal, New Jersey, and the Air Force Research Laboratory. |
| Source: U.S. Army Research Laboratory |
Capacul de supresoare Magpul – 5,5 „este alcătuit dintr-un manșon din polimer rezistent la căldură suprapus peste un scut încălzit din oțel inoxidabil, care se montează direct pe corpul supresor cu cleme din oțel” care „minimizează transferul de căldură pentru a menține temperaturile de acoperire externe până la 1000 grade F mai rece decât suprafața supresorului și permite răcirea fluxului de aer în recipient. În plus, servește ca dispozitiv izolator termic îmbunătățit și dispozitiv de reducere a semnăturii, reducând în mod semnificativ distorsiunile mirajului la imaginea de vedere a shooterului, reducând probabilitatea de deteriorare a impactului asupra corpului supresor și diminuând șansele de accidentare accidentală a calității sau deteriorarea personalului sau echipament în timpul arderii armei și răcire
DefenseReview’s (DR) found that it’s often the little things that can make your life a lot better and/or easier. Assuming it works as advertised, the Magpul Suppressor Cover – 5.5″ (5.5 inches) is one of those products. When it comes to guns heat’s the enemy in a whole bunch of ways, particularly with rifle/carbines, and even more particularly with select-fire rifle/carbines, including those in 5.56mm NATO (5.56x45mm NATO) caliber. Anyway, the Magpul Suppressor Cover – 5.5″ (5.5 inches) is specifically designed to cover 1.5” outer diameter/5.5″-long round cans (silencers/sound suppressors) like the popular Surefire SOCOM556-RC2 muzzle can (silencer/sound suppressor), and it would appear to be very well designed for that purpose.
The the Magpul Suppressor Cover – 5.5″ consists of a “heat-resistant polymer sleeve overlaid onto a raised stainless steel heat shield that mounts directly to the suppressor body with steel clamps” that “minimizes heat transfer to keep external cover temperatures up to 1000 degrees F cooler than the surface of the suppressor and allows cooling airflow across the can. Additionally, it serves as an enhanced thermal insulator and signature reduction device, significantly mitigating mirage distortions to the shooter’s sight picture, reducing the likelihood of impact damage to the suppressor body, and lessening the chance of accidental heat-related injury or damage to personnel or equipment during weapon firing and cool down.” Sounds pretty good.
When you’re involved in a high-speed, low-drag dynamic combat op involving a lot of moving, and perhaps even climbing and/or repelling, the last thing you need is a hot suppressor burning through your clothing or skin. So, why make life any harder than it has to be?
Oh, and the the Magpul Suppressor Cover – 5.5″ even lowers your can’s thermal signature, and attenuates/mitigates the mirage effect on your sight picture. Handy.
The following are Magpul Suppressor Cover – 5.5″ features, straight from the company’s website:
– Extreme temperature protection that mitigates internal suppressor temperatures to safe levels
– Minimizes retained heat, allowing faster cooling than any other suppressor cover technology
– Reduces thermal signature of host firearm
– Mitigates mirage effects in sight picture
– Two stainless steel clamps provide a strong, rigid and reliable interface capable of sustained firing sessions and rough handling
– High temp polymer sleeve withstands brutal suppressor temperatures during extended periods of firing without deterioration
– High strength corrosion resistant stainless steel heat shield
Additional sizes for different can sizes and calibers are supposed to be avalable soon.
Anyway, DR like’s the this product, and looks forward to trying it out at some point. In the meantime, check out Defense Review’s video on it, below.
Company Contact Info:
MagPul Industries
Phone: 877-462-4785 (4MAGPUL)
Email: [email protected]
Website: http://www.magpul.com
un sistem integrat de schelet de carbon care conectează o vesta de soldat și un rucsac, permițând îndepărtarea rapidă a rucsacului, după cum este necesar
au creat o sursă de energie personalizabilă, care poate fi tăiată, pliată sau întinsă, fără a-și pierde funcția;
