Te Products Research Articles

A superior electronic conducting tellurium electrode enabled high rate capability rechargeable Mg batteries

Magnesium batteries are recognized as a potential alternative to lithium ion batteries benefited from the advantages of low cost, high safety, and high energy density. But the development of magnesium batteries suffers from the sluggish motion of Mg2+ in solid electrodes due to strong polarization. Compounds explored to accommodate magnesiation/demagnesiation, suffer from low capacity, sluggish kinetics and poor cycling performance. In this manuscript, copper current collector aided tellurium (Te) as the cathode material of magnesium battery is proposed. Due to superior electronic structure of Te atom, both reactants and products of cathode reaction exhibit metallic conductivity which accelerates the magnesiation/demagnesiation process This material delivers a specific capacity of 338 mAh/g at 100 mA/g, and keeps at 178.5 mAh/g after 400 cycles. Moreover, the electrode performs superior rate capability than the previously reported materials. A specific capacity of 265.4 mAh/g is achieved at 2 A/g without obvious polarization. Even at a very high current density of 3.75 A/g, a specific capacity of 118 mAh/g is still maintained. This study highlights the importance of electronic structure for multi-valent ion reaction related material, which also offers new strategy for cathode design of Mg batteries.

Effect of gelatin on electrodeposition of tellurium from alkaline electrolyte

The effect of gelatin as an additive on tellurium (Te) electrodeposition process was studied by linear sweep voltammogram (LSV) and electrochemical impedance spectroscopy (EIS) in alkaline electrolyte (NaOH). It was found that deposition, corrosion and recrystallization occurred almost simultaneously during Te electrodeposition process, resulting in a porous structure of Te products. Gelatin helped to improve the corrosion resistance and limited current density, and reduce the bath potential at the same current density. LSV showed that the physical adsorption of gelatin on the Titanium (Ti) plate affected the electrodeposition process of Te. EIS results indicated that the gelatin had little effect on the electron transfer of Te electrodeposition but disturbed the diffusion of TeO32−. Equivalent circuit and deposition model of Te electrodeposition process with and without gelatin were deduced. Furthermore, high purity Te products were deposited and obtained on Ti plate from electrolyte with different content of gelatin by chronopotentiometry (CP) for 48 h at 80 A∙m−2, which indicated that moderate amount of gelatin could increase both bath potential and current efficiency of Te electrodeposition. Morphological, structural and pure characterizations of Te products were studied by x-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES), respectively. Introduction of gelatin could not change the morphology of Te products but acted as a grain refiner, that increased the purity of Te products.

Effect of Rolling Temperature on Microstructure and Mechanical Properties of a Nb-Mo Microalloyed Medium Mn Steel

Warm rolling of medium Mn steel is a promising technology to meet the needs of vehicle weight reduction and energy conservation while ensuring the safety for passengers. In this study, a novel Nb-Mo microalloyed 6.6Mn steel was subjected to a series of warm rolling tests at temperatures ranging from 630 to 690 oC, based on the thermodynamic-based prediction of inter-critical annealing using a Thermo-Calc software. As a comparison, a conventional multi-stage thermo- mechanical process involving hot rolling, cold rolling and inter-critical annealing was carried out as well. The optimal rolling temperature parameters for warm rolling was explored through tensile tests and the detailed microstructural characterization. The experimental results show that the microstructure and mechanical characteristics strongly depended on the warm rolling temperature. A better combination of UTS and TE products (~32.0 GPa·%) was achieved in the 660oC-warm-rolled specimen, which is much higher than 12.3 GPa·% for the hot formed 22MnB5 steel and is also comparable to 38.3 GPa·% for the annealed cold-rolled specimens.

How social media influencers enabled a B2B company to drive awareness and engagement with their target consumers

In the autumn of 2016, TE Connectivity (TE), a global engineering business to business (B2B) leader in connectivity and sensor solutions, launched its first social media influencer campaign to increase brand awareness, change perceptions and grow the contact database. The influencer campaign was launched in conjunction with its sponsorship of the Andretti Formula E team, and was paired with an incentive — a sweepstake to win a trip to Andretti Autosport to see the engineering behind motorsports and an exclusive lunch with Michael Andretti, team owner and former champion race car driver. YouTuber Jason Fenske, creator of the channel Engineering Explained, flew to the United Kingdom to learn and film three videos about TE’s involvement in Formula E, the first all-electric international street car race series, and its parallels to the increasing consumer electric vehicle trend. With over 100 TE products in a Formula E car and a major player in the automotive industry, the racetrack-to-the-road thematic videos were concepted and produced to attract engineers from diverse industries and across the business spectrum. The success of Engineering Explained led to influencer programmes with TE’s sponsorship of rLoop, a crowdsourced team of engineers participating in Elon Musk’s SpaceX Hyperloop Competition. Leading up to and during the first competition, TE produced a five-part documentary chronicling the formation of the team, the technology and the excitement of the challenge to create the fifth mode of transport, which was amplified to an engineering audience through a multi-influencer distribution strategy. During the second competition, a YouTube influencer, Linus Tech Tips, travelled to California to film a 20-minute Facebook Live segment the night before the competition to capture the tension, nerves and excitement as the rLoop team put the finishing touches on their prototype, and produced a post-competition YouTube video on the technology of the Hyperloop. This paper comprises a practitioner’s insights into and lessons learned from activating B2B influencer programmes.

Upaya Pembinaan Masyarakat Dalam Rangka Pengembangan Susu Kambing Pasteurisasi (Suke) pada Kelompok Tani di Desa Lambanan, Kecamatan Balanipa, Kabupaten Polewali Mandar, Sulawesi Barat

Problems faced by the society in Lambanan village are the lack of knowledge and skills of farmers in managing the maintenance goat, the unability of utilizing and processing goat milk and most societies work as goat breeder and farmer. Purpose of this community dedication is to provide skills and the knowledge for the farmers in the Lambanan village about techniques and milking ways as well as handling and processing milk of goat. Method used is partisipative elucidation followed by demonstration and practice. Te training activities which are conducted on 25—26 June 2016 in main hall of Lambanan village ofce, began with in-class learning about maintenance management, handling, processing and marketing management the goat of PE, then followed by demonstrating outside about technique of milking and processing milk of goat pasteurization. Te products of pasteurized goat milk were packaged in glass that was commercialized with label Suke. Te conclusion of this activity shows that the training activities looked very enthusiastic to join this training and actively ask about goat milk processing.

Aplikasi Cetakan Permanen untuk Meningkatkan Produksi dan Kualitas Produk IKM Pengecoran Logam Kuningan di Ngawen, Sidokarto, Godean, Yogyakarta

Small and Medium Enterprises (SME) brass foundry in Ngawen Sidokarto, District of Godean, Sleman, Yogyakarta mostly produced cow necklace accessories (klonthong) and jathilan accessories (klinthing). Te industry and business management are arranged within the scope of family. Te products are relatively low in quality and its market share is limited and tend to be traditional. Tis condition is caused by the weak knowledge of the management and the method of casting metals and metal science. Brass casting methode, that was used at IKM partner, is casting with mold of sand or soil. Tis process requires the making process of sand molds, that is removed afer the brass solidify. For large quantities products, this process is inefcient and takes a long time. It would require a more efcient and faster method in the production process. Method of sand casting and ceramics have been used by SMEs cast brass in Yogyakarta, however it has many disadvantages in terms of increased productivity and quality as well as the expansion of product applications. Te permanent mold casting of iron is a casting method which has many advantages over other methods, but the use for SMEs has not been applied in the SME of cast brass. Te permanen mold casting methods was introduced to SME partners. Tis replaces the sand mold materials and molding sand. It is expected the casting process is faster because the mold can be used for a large number of products. Te results show that the application of the technology results in products with precision and consistent in shape and size. Community Service of UGM with Appropriate Technology has also collaborated with Industry and Trade service of Yogyakarta donation of production machinery for making permanent mold. It can be concluded that the application of permanen mold in the brass foundry industry improve the product precision and the speed of produsction.

Ultrasensitive room-temperature detection of NO2 with tellurium nanotube based chemiresistive sensor

Te nanotubes were synthesized through a microwave reflux method that employed a mixture of polyethylene glycol and water as solvent. The water content was used to manipulate the boiling temperature of the solvent. Characterizations of the Te products with scanning electron microscopy, transmission electron microscopy, energy dispersive spectroscopy and X-ray diffraction spectroscopy indicate that the growth of Te nanotubes is governed by both diffusion-limited depletion at the surface of seeds and dissolution–crystallization process. A chemiresistive sensor constructed with the as-prepared Te nanotubes exhibits excellent sensitivity and selectivity to trace amount of NO2 at room temperature, where the low detection limit is found to near 500ppt. The response of the gas sensor is totally reversible with the assistance of UV irradiation, in which increasing the UV exposure reduces the sensor recovery time to less than 5min. The great performance of this Te-based gas sensor is attributed to the large surface-to-volume ratio and high crystallinity of these Te nanotubes.

Structural Validation of Software Product Line Variants: A Graph Transformations Based Approach

A Software Product Line is a set of software products that share a number of core properties but also differ in others. Differences and commonalities between products are typically described in terms of features. A software product line is usually modeled with a featurediagram, describing the set of features and specifying the constraints and relationships between these features. Each product is defined as a set of features. In this area of research, a key challenge is to ensure correctness and safety of these products. There is an increasing need for automatic tools that can support feature diagram analysis, particularly with a large number of features that modern software systems may have. In this paper, we propose using model transformations an automatic approach to valida te products according to dependencies defined in the feature diagram. We first introduce the necessary meta -models. Then, we present the used graph grammars to perform automatically this task using the AToM3 tool. Finally, we show the feasibility of our proposal by means of running examples.

Morphology Control, Crystal Growth, and Growth Mechanism of Hierarchical Tellurium (Te) Microstructures

Understanding the factors that influence the growth and final shape of semiconductor tellurium microstructures is important for controlling their properties. However, relative to their single-crystalline nanostructures, the growth of complex structures that are ideally composed of nanostructures arranged in a particular way can be difficult to control. Here, we developed a facile solvothermal method and successfully completed the controlled synthesis of Te particles with distinctive morphologies, including flower-like, ball-flower, nestlike, and sheetlike structures. These structures, self-assembled from nanorods and nanosheets, are systematically studied by adjusting the reaction parameters, such as the amount of NaOH, the volume ratio of EG/EN, the amount of PVP, and the reaction time. Results reveal that the morphology of Te microstructures can be easily controlled by simply altering the reaction conditions and that NaOH plays a crucial role in the final morphology of Te products. The growth mechanisms...

Microstructure and Mechanical Properties of Hot-Rolled Low-Carbon Medium-Manganese TRIP Steels

Transformation Induced Plasicity (TRIP) steels have attracted a growing interest in recent years due to their high strength and ductility combination.An alternative alloy and processing concept has been studied to evaluate the feasibility of producing low-carbon medium-manganese TRIP Steels. Conventional hot-rolling, and batch annealing processes were simulated with three laboratory heats of varying manganese content. The steels were found to be fully hardenable with conventional hot-strip mill processing and subsequent batch annealing simulations produced significant retained austenite levels. The combination of the prior martensitic microstructure in the as-hot-rolled condition, and austenite created during annealing,resulted in remarkable combinations of strength and ductility. Optimum properties were found when samples were annealed at approximately 630°C. While this treatment maded the tensile strength to 800-1020 MPa, the total elongation increased to between 27 percent and 35 percent. UTS*TE products exceeding 30,000 MPa*% were observed, making these materials attractive for high strength, high ductility applications.

Chemical Synthesis of Two-Dimensional Iron Chalcogenide Nanosheets: FeSe, FeTe, Fe(Se,Te), and FeTe2

Transition metal chalcogenides are important materials because of their range of useful properties and applications, including as thermoelectrics, magnetic semiconductors, superconductors, quantum dots, sensors, and photovoltaics. In particular, iron chalcogenides have received renewed attention following the discovery of superconductivity in PbO-type β-FeSe and related solid solutions. This paper reports a low-temperature solution chemistry route to the synthesis of β-FeSe, β-FeTe, FeTe2, and several members of the β-Fe(Se,Te) solid solution. The samples were analyzed by powder XRD, TEM, EDS, SAED, SEM with elemental mapping, AFM, and SQUID magnetometry. Consistent with the layered crystal structures, the FeSe, FeTe, and Fe(Se,Te) products are predominantly two-dimensional single-crystal nanosheets with thicknesses of approximately 2−3 nm and edge lengths ranging from 200 nm to several micrometers. FeTe2 forms a mixture of nanosheets and one-dimensional sheet-derived nanostructures. None of the samples a...

Controlled Synthesis of Se/Te Alloy and Te Nanowires

Se/Te alloy and Te nanowires (NWs) with different morphologies were synthesized through a novel, controllable solution-phase method. Sodium dodecylbenzene sulfonate was employed as a surfactant to control the reaction rate in the synthesis. Through reaction process dynamics control, both "bending" and "V-shaped" Se/Te alloy NWs were controllably produced. The phase structures and morphologies of the Se/Te and Te products were investigated with XRD, TEM, and HRTEM. The formation mechanisms of the NWs were investigated on the basis of the experimental results. The significance of these results lies in the important implications concerning the potential use of these NWs materials for nanoscale electronic devices.

133. Improvement of cell survival in TE products after cryopreservation

133. Improvement of cell survival in TE products after cryopreservation

Low-Carbon Manganese TRIP Steels

The development of TRansformation Induced Plasicity (TRIP) steels has seen much activity in recent years, due to the promise of very high formability combined with high strength. The accepted method for production of as-hot-rolled TRIP steel employs multistage runout table cooling and coiling in the bainitic transformation temperature regime. As an alternative to confronting the production difficulties the accepted strategy presents, a program was begun to evaluate the potential of 0.1C-6.0Mn steels processed in a more conventional manner. Three laboratory heats were melted to consider the effect of manganese content on processing and properties. The steels were found to be fully hardenable with conventional hot-strip mill processing and subsequent batch annealing simulations produced significant retained austenite levels. The combination of the prior martensitic microstructure in the as-hot-rolled condition, and austenite created during annealing, resulted in remarkable combinations of strength and ductility. In the as-hot-rolled condition, tensile strengths exceeding 1400 MPa were observed, with total elongations of approximately 10 percent. Optimum properties were found when samples were annealed at approximately 650°C. While this treatment reduced the tensile strength to 800-1000 MPa, the total elongation increased to between 30 percent and 40 percent. UTS*TE products exceeding 30,000 MPa-% were observed, making these materials attractive for high strength, high ductility applications.

Yrast excitations in A = 126–131 Te nuclei from deep inelastic 130Te+ 64Ni reactions

Thick target γγ coincidence measurements for the system 130Te + 275 MeV 64Ni have been performed using the GASP Ge detector array at Legnaro. For the isotopic assignments of previously unknown γ-ray cascades, prompt γγ coincidences observed between Te and Ni partner products were of vital importance. The results yield much new information about excited states of moderate spins in A = 126–131 tellurium nuclei, especially about yrast excitations of the little studied odd- A isotopes 127Te, 129Te, and 131Te. Level systematics of tellurium nuclei are presented, and both single-particle and collective aspects of the level spectra are discussed.

Chlorination of adamantane and alkyladamantanes with chlorosulfonic acid

We es tab l i shed that adamantane and a lkyladamantanes reac t under mild conditions with chlorosulfonic acid to yield chlor ides . In adamantane f rom one to th ree hydrogen a toms a re replaced by chlorine, while in 1 ,3-d imethyladamantane f rom one to two hydrogen a toms a re rep laced by chlorine, depending on the reac t ion t ime. The r ep l acemen t occu r s s tepwise , which makes it poss ib le to obtain both the in te rmedia te and end chlorinat ion products in good yield. Thus, the addition of adamantane (I) to chlorosulfonic acid, t aken in an 8-10-fold weight e x c e s s re la t ive to (D, followed by holding the reac t ion mix ture at -5~ for t h, gave, a f t e r the usual workup, 1 -ch loroadamantane (II) in 60.7% yield, mp 163-164~ holding the react ion mix tu re for 60 h gave 1 ,3-d ichloroadamantane (III) in 80.7% yield, mp 130-131 ~ while holding the reac t ion mix tu re for 240 h gave 1 ,3 ,5 t r i ch lo roadamantane (IV) in 70% yield, mp 102 ~

Investigations of intermediates in the production of vitamin A by the method of gas-liquid chromatography

This communica t ion p resen t s the r e su l t s of an invest igat ion of in te rmedia te products in the production of v i tamin A, a imed at a de te rmina t ion of the composi t ion of the reac t ion mix tu res and the development of methods of quali tat ive and quanti tat ive analys is of these in te rmedia te products , usable under industr ia l conditions. In the work we used domest ic ch romatographs of the KhL-4, UKh-1, and LKhM-TA type.