Lună: iunie 2016

Revizie SnowHawk Sistemul de protecție împotriva vremii la rece / Balaclava în Hyde Definiție PenCott-Snowdrift Arctic Combat Camo (Camuflaj) Model pentru Arctic Warfare Ops(Revision SnowHawk Cold Weather Goggle System/Balaclava in Hyde Definition PenCott-Snowdrift Arctic Combat Camo (Camouflage) Pattern for Arctic Warfare Ops)

Sistemul de revizie SnowHawk Weather Goggle, conceput și dezvoltat special pentru operațiunile de război arctic, este, în esență, o balustradă foarte confortabilă care încorporează tehnologia Anon’s Integration Magnetic Facemask (MFI®) pentru a „integra perfect ochelarii și balaclava, asigurând stabilizarea și sigilarea pielea expusă „, realizând acoperirea totală a capului și a feței, ușurința în utilizare, îndepărtarea rapidă și confortul. Revizuirea aplică, de asemenea, stratul de acoperire Revoluția OcuMax Plus în interiorul obiectivului pentru ochelari de protecție pentru a preveni formarea de ceață și o acoperire cu strat dur pe partea exterioară a obiectivului pentru a preveni zgârierea.

Revision SnowHawk Cold Weather Goggle System/Balaclava in Hyde Definition PenCott-Snowdrift Arctic Combat Camo (Camouflage) Pattern for Arctic Warfare Ops! (Photos!)

Posted by: David Crane June 2, 2016

Speaking of combat/tactical gear and clothing in Hyde Definition PenCott combat camo (camouflage) patterns, DefenseReview (DR) also got a look at the Revision SnowHawk Cold Weather Goggle System/balaclava in Hyde Definition PenCott-Snowdrift arctic combat camo pattern at SOFIC 2016 (Special Operations Industry Conference 2016). The Revision SnowHawk Cold Weather Goggle System was developed with the assistance of Anon Optics (a Burton Snowboards brand), which supplied the goggle portion of the system.

The Revision SnowHawk Cold Weather Goggle System, designe and developed specifically for arctic warfare operations, is essentially a very comfortable balaclava that incorporates Anon’s Magnetic Facemask Integration (MFI®) technology to “seamlessly integrate the goggle and balaclava, ensuring stabilization and seal, with no skin exposed,” achieving total head and face coverage, ease of use, swift removal, and comfort. Revision also applies the Revision OcuMax Plus coating to the inside of the goggle lens to prevent fogging, and a hard-coat coating on the outside of the lens to prevent scratches.

It’s a nice looking system, particularly with the PenCott-Snowdrift arctic combat camo pattern applied, and will likely be greatly enjoyed by military Special Operations Forces (SOF) tasked with arctic warfare missions. On a side note, DefenseReview wouldn’t mind seeing balaclavas in Hyde Definitions’ other PenCott camo patterns, including Pencott-GreenZone and Pencott Badlands.

The following is Revision’s official press release on the SnowHawk Cold Weather Goggle System:

“Essex Junction, Vermont (May 23, 2016) – Revision Military, a world leader in protective eyewear solutions, introduces the SnowHawk™ Cold Weather Goggle System. Revision developed this goggle system in collaboration with Anon Optics, a leader in goggle design for snow sports and a brand owned by Burton Snowboards, the world’s leading snowboard company. The SnowHawk Cold Weather System is the first-ever fully integrated ballistic goggle and balaclava system offering complete face coverage, superior anti-fog performance, and ballistic protection.

Cold climate operations have become an essential tactical focus for militaries around the world, with many dedicating more resources and training to maneuvers in the Arctic and other cold weather regions. This shift has generated a growing demand for gear that can withstand harsh conditions and function in extreme environments. Extensive time, attention, and resources were dedicated to ensuring the breathability of this cold weather system: Mesh over the mouth and nose directs breath away from the goggle; the dual-pane thermal gasket lens creates an insulated barrier; built-in top and lateral forced-air vents provide constant airflow; and, Revision’s leading OcuMax© Plus coating is applied on the inside of the lens to prevent fogging, plus a hard-coat is on the outside of the lens to resist scratching. The SnowHawk system’s balaclava design utilizes Anon’s Magnetic Facemask Integration (MFI®) technology to seamlessly integrate the goggle and balaclava, ensuring stabilization and seal, with no skin exposed. The system achieves total face and head coverage, but is also intuitively designed for ease of use and swift removal when necessary. The SnowHawk Cold Weather System is available in black or winter white.

“As Revision has evolved, we have increasingly taken advantage of our cutting-edge facilities to tailor our protective equipment to the many environments forces around the world encounter,” said Jim Hester, Vice President, Optics, Revision Military. “We are excited to take this capability to greater extremes and challenge the limits of what our protective eyewear can do with the SnowHawk Cold Weather Goggle System. We are especially pleased to partner with a neighboring Vermont company on this venture. Burton is a likeminded and impressive company in an adjacent field, and it brings a wealth of experience and a fresh perspective to the table.” Hester continued, “As extreme cold weather operations are expanded, the SnowHawk goggle system, and the technology we have developed for this product, will be the standard for integrated head systems used by forces in extreme cold conditions.”SnowHawk_Headform_FloatingAbove: Revision’s SnowHawk Cold Weather Goggle is shown in Arctic white and Black configurations.

With improved comfort, functionality, and stability comes enhanced endurance and situational awareness; this is especially vital in the harshest and most unforgiving terrain on the planet. The SnowHawk Cold Weather System is low-profile and lightweight, with a sleek form-factor ideal for both tactical operations and extended-use missions. This efficient design ensures compatibility with helmets, binoculars, and night vision systems. The SnowHawk goggle lenses are interchangeable—with options for bright sunlight, overcast or low-light scenarios, and laser protection—and are made from optical grade polycarbonate to shield eyes from unexpected fragments, exceeding U.S. Military eyewear ballistic impact resistance requirements (MIL-PRF-32432).
SnowHawk goggles are compatible with Revision’s Rx Carrier for prescription lenses up to ±11D. Revision has tested the SnowHawk Cold Weather Goggle System in the company’s Research & Development laboratory, and the SnowHawk system has undergone rigorous review by multiple organizations in many diverse environments and conditions, including in Alaska, California, Norway, Canada, and atop Mount Washington, NH, a location known to be one of the coldest and harshest in the U.S. For additional information on this product and Revision’s capabilities, or for purchase inquires, contact [email protected].

ABOUT REVISION
Revision develops and delivers purpose-built protective soldier equipment for military use worldwide. The company, which began with eyewear, has expanded to face, head and torso protection as well as energy storage and power management products, continues to develop innovative capabilities for integrated, performance-enhancing soldier systems. To that end, Revision brings together the most advanced expertise, state-of-the-art facilities and finest technical minds. Privately owned and ISO 9001:2008 certified, Revision’s operational headquarters is located in Essex Junction, Vermont, USA, with additional offices in Montreal, Canada, The UK, and Luxembourg. For more information, visit www.revisionmilitary.com, write [email protected], or call +1 802-879-7002.”

 

 

 

 

Company Contact Info:

Revision
7 Corporate Drive
Essex Junction VT
05452 USA
Phone: 802.879.7002
Toll-Free: 800.383.6049
Fax: 802.879.7224
Email Contact Page: https://www.revisionmilitary.com/contact-us/
Website: https://www.revisionmilitary.com

Hyde Definition Ltd
Chapel View, Mill Road
Hempnall, Norfolk
NR15 2LP, UK
Phone: +44 (0)1508 499704
Email: [email protected]
Website: http://www.pencottcamo.com

Anon Optics
Email Contact Page: http://anonoptics.com/contact
Website: http://anonoptics.com

Nanocars luate pentru o plimbare dur(Nanocars taken for a rough ride)

au constatat în testele recente că conducerea autovehiculelor lor în condiții ambientale expuse la aer liber, mai degrabă decât un vid – a pierdut după o vreme, deoarece mașinile hidrofobe cu o singură moleculă au rămas pe drum și au creat ceea ce sa ridicat la lovituri de viteză mari.Cercetătorii au remarcat că nu puteau vedea noile modele cu microscoape de scanare pentru că aceștia lucrează doar în vid și emit energie care ar putea influența circulația autovehiculelor

Nanocars

Printr-un pahar, cald: Nanomaterialele pot ajuta la eficientizarea ferestrelor

Nanofoamul care se dezvoltă – cunoscut sub numele de compozit nanocelular cu izolație termică superioară și izolare fonică – utilizează bule de gaz mai mici de 100 nanometri în diametru pentru a bloca transferul de căldură și sunet prin ferestrele de sticlă, permițând lumina vizibilă să treacă și să mențină o claritate Similar cu ferestrele normale

Posted: Jun 01, 2016

Through a glass, warmly: Nanomaterials can help make windows more efficient

(Nanowerk News) A team of researchers at the U.S. Department of Energy’s (DOE’s) Argonne National Laboratory is using nanomaterials to improve the energy efficiency of existing single-pane windows in commercial and residential buildings. The team was recently awarded a $3.1 million grant from DOE’s Advanced Research Projects Agency-Energy (ARPA-E) to develop a technology that could help achieve that goal. The nanofoam the team is developing – known as a nanocellular composite with super thermal insulation and soundproofing – uses gas bubbles less than 100 nanometers in diameter to block the transfer of heat and sound through glass windows while allowing visible light to pass through and maintain a clarity similar to normal windows.
chemical engineer Jie Li, left, and postdoctoral researcher Alina Yan create coated nanoparticles in a continuous flow reactor
Principal chemical engineer Jie Li, left, and postdoctoral researcher Alina Yan create coated nanoparticles in a continuous flow reactor. Nanoparticles are key to an ongoing effort at Argonne to create more efficient window films.
“That’s really the trick, blocking the heat and sound transfer while maintaining transparency,” said Ralph Muehleisen, principal building scientist at Argonne. “It’s fairly simple to develop a coating that insulates, but getting one that is thin and you can still see through is a substantial technical challenge.”
The nanofoam, which will be extruded into sheets about three millimeters thick, creates a thermal insulation effect by using the tiny bubbles to reduce collisions among gas molecules, thereby reducing the transfer of heat energy. When the bubbles are reduced to that scale, super thermal insulation becomes possible.
A foam with larger bubbles could perform a similar function, but those bubbles would scatter visible light, making the window hazy and less transparent. The bubbles need to be created with a size of around 100 nanometers or less, distributed properly and then sculpted within the host medium to achieve an acceptable level of clarity.. By way of comparison, a human hair is about 60,000 nanometers wide and a DNA molecule is 2-3 nanometers wide.
According to ARPA-E, single-pane windows make up 30-40 percent of windows in the United States, depending on the region. Single-pane windows conduct at least twice as much heat as double paned, so retrofitting all those windows could save consumers about $12 billion a year in energy costs.
The nanofoam team combines expertise from nanomaterial scientists, polymer scientists, chemical, process and building engineers, along with the expertise of Argonne’s Center for Nanoscale Materials, a DOE Office of Science user facility. The team also includes researchers from the University of Chicago’s Institute for Molecular Engineering, Lawrence Berkeley National Laboratory (LBNL) and Temple University’s Department of Chemistry.
“This effort really shows the power of cross-cutting scientific collaboration,” said Matt Tirrell, who is Argonne’s Deputy Laboratory Director for Science and holds a joint appointment with the University of Chicago. “By bringing together these unique skillsets and facilities, we have the ability to make substantial breakthroughs that hold the promise to make a big difference in building energy efficiency.”
The team will not be satisfied with creating laboratory versions of the materials, however. Researchers are also developing processes that can be economically scaled up to commercial production. Jie Li, a principal chemical engineer at Argonne and the principal investigator on the project, recently completed the DOE’s Lab-Corps program, which aims to accelerate the transfer of clean energy technologies from national laboratories to the marketplace.
“We know that commercial production is the key step to having a positive effect on building efficiency,” Li said. “There are billions of square feet of windows in the US. Imagine the impact of making all those windows more efficient. That’s when you really start to see benefit from your science.”
The team also includes Leah Guzowski, director of strategic programs at Argonne, Yugang Sun, formerly of Argonne and now a professor at Temple University, and Stephen Selkowitz and Charlie Curcija from the Windows and Daylighting Group at LBNL.
This nanofoam research builds upon another nanomaterial being developed at Argonne. Several members of the ARPA-E team are working on a new nanoparticle coating of vanadium dioxide, which is a phase-change material that behaves differently at different temperatures. At low temperatures, vanadium dioxide is a semiconductor that allows both near-infrared light (the portion of the solar spectrum that contains approximately half of all solar energy) and visible light to pass through. When it gets hot, however, it develops metallic properties and begins to block out near-infrared light, which helps reflect solar radiation during the summer. Current versions of vanadium dioxide do not block much solar heat gain, so the film must be very thick, which makes for a darker window that consumers are reluctant to adopt.
By using nanoparticles of vanadium dioxide, the team has created a film that can boost near-infrared blocking and is more efficient at reflecting solar radiation, all while maintaining visible transparency.
The Argonne researchers hope that by combining the nanofoam and the vanadium dioxide, they may be able to create a single-pane window that could achieve efficiencies similar to multi-pane Low-E units. Low-E windows usually have multiple coated panes of glass with inert gas suspended between them. By using only one pane of glass without the costly and complicated sealing system required by multi-paned windows, the new windows would become more affordable, allowing more widespread adoption.
Source: Argonne National Laboratory

Read more: Through a glass, warmly: Nanomaterials can help make windows more efficient

Undă moleculară a catalizatorului pe bază de oxid de metal nanosizat

Studiul recent al grupului Ananikov a vizat formarea legăturii carbon-heteroatom catalizată de oxizii de cupru de dimensiuni nano. Acest tip de reacție catalitică interesantă utilizează nanoparticule CuO și Cu2O pentru a promova transformările chimice. Studiul mecanic a relevat o imagine destul de complicată a evoluției catalizatorului. În reacția C-S de cuplare încrucișată, oxidul de cupru cu dimensiunea nano a fost transformat în specii metalice solubile: tiolații de cupru [Cu (SR) n] s-au format ușor în reacția oxidului de cupru cu tioli (RSH). Într-adevăr, procesul studiat demonstrează că reacția presupusă în mod tradițional pe suprafața oxidului de metal nu aduce o contribuție primară la formarea produsului. Modificarea oxidului metalic și transferul de soluții corespunzătoare de tiolat de metal în soluție au fost responsabile de formarea formei active a catalizatorului.
În ciuda căii catalitice eterogene așteptate, studiul reacției de cuplare încrucișată a evidențiat solubilizarea oxidului de cupru și a catalizei omogene de stare a soluției. Mișcarea complecșilor de cupru la soluție a fost însoțită de eliberarea apei: Cu2O + 2RSH = 2CuSR + H2O

Posted: Jun 01, 2016

Molecular wave of nanosized metal oxide catalyst

(Nanowerk News) Metal oxides represent primary source of catalytic materials for a variety of industrial and research applications, either as an active phase or as a supporting phase. Mechanistic studies conducted by Ananikov group revealed formation of catalytically active species due to partial dissolution of metal oxide in the reaction mixture and generation of soluble metal complexes (ACS Catalysis, „Nature of the Copper-Oxide-Mediated C–S Cross-Coupling Reaction: Leaching of Catalytically Active Species from the Metal Oxide Surface”). Therefore, metal oxides are not directly involved in heterogeneous catalysis; rather, they can be considered as a source of reactive species for solution-state homogeneous catalysis (DOI: 10.1021/acscatal.6b00337).
Catalysis is the major driving force in modern industry. Catalysis is vital in production of fuels, materials, drugs, and a variety of molecular and composite chemicals. Around 80% of all industrial processes involve catalytically produced components or catalytic technologies. Metal oxides represent a traditional class of solid materials to create active phases of catalysts or to construct supports for other types of active centers. Metal oxides as active phases are designed to render chemical transformation and directly participate in the catalytic cycle. Metal oxides as supporting phases are used to introduce innocent component with high stability.
Cryogenic scanning electron microscopy study of solution phase of catalytic cross-coupling reaction
Cryogenic scanning electron microscopy study of solution phase of catalytic cross-coupling reaction. (Image: Ananikov group)
Recent study of Ananikov group addressed carbon-heteroatom bond formation catalyzed by nano-sized copper oxides. This intriguing type of catalytic reactions utilizes CuO and Cu2O nanoparticles to promote chemical transformations. Mechanistic study revealed rather complicated picture of catalyst evolution. In C-S cross-coupling reaction, nano-sized copper oxide was transformed to soluble metal species: copper thiolates [Cu(SR)n] were readily formed in the reaction of copper oxide with thiols (RSH). Indeed, the studied process demonstrates that traditionally assumed reaction on the surface of metal oxide do not make a primary contribution to the product formation. Modification of metal oxide and transfer of corresponding metal thiolate species to solution were responsible for the formation of active form of the catalyst.
Despite expected heterogeneous catalytic pathway, the study of cross-coupling reaction revealed solubilization of copper oxide and solution state homogeneous catalysis. Movement of copper complexes to solution was accompanied by release of water: Cu2O + 2RSH = 2CuSR + H2O. Cryogenic scanning electron microscopy suggested formation of a complex catalytic system with substantial evolution of initial form of metal oxide during the catalytic reaction (see Figure).
The occurred transformations may change the paradigm of metal-oxide-based systems application in catalysis for both options – active phase and supporting phase. In the former option, if metal oxide is assumed as an active phase, transition to solution drastically changes the nature of the catalytic process. In the latter option, if metal oxide is utilized as a support, the oxide does not behave as an innocent material and cannot be recovered in the original state.
Catalyst stability and recycling are the key properties affected by the reported transformation of the metal oxide. Knowledge of mechanistic nature of catalyst evolution opens up new possibilities to reduce cost of chemicals production processes.
Source: Zelinsky Institute of Organic Chemistry
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Read more: Molecular wave of nanosized metal oxide catalyst

Nanoparticule pentru înlocuirea elementelor de pământuri rare în magneți permanenți

Cercetatorii au folosit un complex mixt de oleat de cobalt-cobalt intr-o abordare sintetica intr-un singur pas pentru a produce nanoparticule magnetice core-shell. Materialele rezultate au prezentat proprietăți magnetice puternice și capacități de stocare a energiei.

Posted: Jun 01, 2016

Nanoparticles to replace rare-earth elements in permanent magnets

(Nanowerk News) Technologies from wind turbines to electric vehicles rely on critical materials called rare-earth elements. These elements, though often abundant, can be difficult and increasingly costly to come by.
Now, scientists looking for alternatives have reported in ACS’ journal Chemistry of Materials („Strongly exchange coupled core|shell nanoparticles with high magnetic anisotropy: a strategy towards Rare Earth -free permanent magnets”) a new way to make nanoparticles that could replace some rare-earth materials and help ensure the continued supply of products people have come to depend on.
Rare-earth elements have unique characteristics that make them very useful. For example, the world’s strongest magnets are made with neodymium. A little too powerful for your refrigerator, these magnets are incorporated into computer disk drives, power windows and wind turbines.
But rare earths are challenging to mine and process, and prices can rise quickly in a short period of time. Given the increasing demand for rare earths, Alberto López-Ortega, Claudio Sangregorio and colleagues set out to find substitutes for use in strong magnets.
The researchers used a mixed iron-cobalt oleate complex in a one-step synthetic approach to produce magnetic core-shell nanoparticles. The resulting materials showed strong magnetic properties and energy-storing capabilities.
Their approach could signal an efficient new strategy toward replacing rare earths in permanent magnets and keeping costs stable, the researchers say.
Source: American Chemical Society

Read more: Nanoparticles to replace rare-earth elements in permanent magnets