Correlations among superconductivity, structural instability, and band filling in Nb1-xB2 at the critical point x=0.2

We performed an extensive investigation on the correlations among superconductivity, structural instability and band filling in Nb1-xB2 materials. Structural measurements reveal that a notable phase transformation occurs at x=0.2, corresponding to the Fermi level (EF) in the pseudogap with the minimum total density of states (DOS) as demonstrated by the first-principles calculations. Superconductivity in Nb1-xB2 generally becomes visible in the Nb-deficient materials with x=0.2. Electron energy-loss spectroscopy (EELS) measurements on B K-edge directly demonstrated the presence of a chemical shift arising from the structural transformation. Our systematical experimental results in combination with theoretical analysis suggest that the emergence of hole states in the sigma-bands plays an important role for understanding the superconductivity and structural transition in Nb1-xB2.Comment: 16 pages, 4 figure

Perancangan Buku Cerita Bertema Olahraga Bulu Tangkis Bagi Usia 5-7 Tahun

Bulu tangkis merupakan olahraga yang menjadi “khas” berprestasi bagi negara Indonesia. Namun,permasalahannya adalah bulu tangkis hanya diliput ketika ada kejuaraan atau lomba saja, selain itu sejak dinitidak dibiasakan dekat dengan olahraga bulu tangkis. Untuk menyikapi hal di atas, maka dibuat media buku yangdiharapkan media ini mampu menimbulkan kecintaan pada bulu tangkis. Media buku dipilih karena buku adalahmedia yang cocok untuk mengajarkan sesuatu bagi anak-anak untuk mengenal serta memahami, serta mediayang dekat dengan anak-anak. Melalui media buku, dapat diperoleh pengetahuan-pengetahuan, serta buku dapatmengimajinasi anak-anak tersebut ketika membacanya. Ditambahkannya interaksi harapannya akan lebih paham,tertarik, dan timbul minat akan olahraga bulu tangkis. khusus target audience yang dituju adalah anak-anakdengan usia 5-7 tahun. Perancangan ini merupakan stimulus awal bagi anak-anak usia 5-7 tahun, sebelum usiakeemasan di mana anak-anak bertemu dengan dunia olahraga bulu tangkis yang sesungguhnya

Interaction of Individual Skyrmions in Nanostructured Cubic Chiral Magnet

We report the direct evidence of field-dependent character of the interaction between individual magnetic skyrmions as well as between skyrmions and edges in B20-type FeGe nanostripes observed by means of high resolution Lorentz transmission electron microscopy. It is shown that above certain critical values of external magnetic field the character of such long-range skyrmion interactions change from attraction to repulsion. Experimentally measured equilibrium inter-skyrmion and skrymion-edge distances as function of applied magnetic field shows quantitative agreement with the results of micromagnetic simulations. Important role of demagnetizing fields and internal symmetry of three-dimensional magnetic skyrmions are discussed in details.Comment: accepted in PR

Comparison between controlled and uncontrolled spray-DIC modeling for dehydration process

The work reported here focuses on the controllability expressions in the mathematical modeling of dehydration process of food concentrates in producing powder using spray-DIC (spray-Détente Instantaneé Controlee or spray-instant controlled pressure drop). This paper presents the second-order partial differential equations for mathematical modeling of moisture and heat transfer in spray-DIC process. This paper proposes the enhancement in the simple model of DIC technique with controllability expression to be used in the spray-DIC. The controllability expression in the drying process models gives better results when compared to the models without the controllability expression. The results were computed and shown by MATLAB 2013 with Windows 8 operating systems. The controllability expression in dehydration process model using the spray-DIC drier manage to succesfully control the dehydration process

International Student Adaptation Factors in Malaysian Public Universities

The research focuses on the internationalization of Malaysia's Higher Education by ensuring that the increasing number of international students will be accommodated fairly. The issues addressed will revolve around the Psychological Factor with the Intercultural Adaptation Model by Kim Young Yun as the foundation. The model was used as the framework to focus on the psychological issue the international students experienced. Twelve international students were selected as respondents from four public universities in Malaysia: UPM, UKM, UM and USM as the main research area. This qualitative research used a semi-structured interview as the main instrument of data collection, online interview using WeBex and Google Meet were used. Respondents were selected using quota sampling with varying characteristics. Results were analysed by using the colour-coding technique assisted by ATLAS.ti. Although it is psychologically challenging, some of it is actually helping as a part of their life circle's support system, namely the presence of supportive classmates and support group

Hepatitis B virus receptors and molecular drug targets

Chronic hepatitis B virus (HBV) infection is a leading cause of liver disease worldwide. Virus-induced diseases include cirrhosis, liver failure and hepatocellular carcinoma. Current therapeutic strategies may at best control infection without reaching cure. Complementary antiviral strategies aimed at viral cure are therefore urgently needed. HBV entry is the first step of the infection cycle, which leads to the formation of cccDNA and the establishment of chronic infection. Viral entry may thus represent an attractive target for antiviral therapy. This review summarizes the molecular virology and cell biology of HBV entry, including the discovery and development of new HBV entry inhibitors, and discusses their potential in future treatment of HBV infection

A Titanium Nitride Absorber for Controlling Optical Crosstalk in Horn-Coupled Aluminum LEKID Arrays for Millimeter Wavelengths

We discuss the design and measured performance of a titanium nitride (TiN) mesh absorber we are developing for controlling optical crosstalk in horn-coupled lumped-element kinetic inductance detector arrays for millimeter-wavelengths. This absorber was added to the fused silica anti-reflection coating attached to previously-characterized, 20-element prototype arrays of LEKIDs fabricated from thin-film aluminum on silicon substrates. To test the TiN crosstalk absorber, we compared the measured response and noise properties of LEKID arrays with and without the TiN mesh. For this test, the LEKIDs were illuminated with an adjustable, incoherent electronic millimeter-wave source. Our measurements show that the optical crosstalk in the LEKID array with the TiN absorber is reduced by 66\% on average, so the approach is effective and a viable candidate for future kilo-pixel arrays.Comment: 7 pages, 5 figures, accepted for publication in the Journal of Low Temperature Physic