Polarization

This thesis emphasizes on implementing and experimentally demonstrating innovative fabrication solutions for micro-scale metamaterials designed to operate in the terahertz electromagnetic regime. Microfabrication is a conventional fabrication technique that has been employed to fabricate metamaterials operating at terahertz frequencies.

81p runthenight07 01-03-2023 7 4   Download

Research purpose: to build an analytical model describing the dependence of the optical properties (absorption, dispersion, group velocity and group delay) of the three configuration energy level system Λ, Ξ and V according to the following parameters: control parameters (intensity, frequency, polarization and relative phase) of the laser fields.

25p prisonbreak123 21-05-2021 18 3   Download

The purposes of research "Electronic transport in semiconductor nanostructure based on polar material AlGaN/GaN and Penta-Graphene nanoribbon" studying on electronic transport phenomena in semiconductor nano structures such as AlGaN/GaN and penta-graphene nanoribbon.

37p capheviahe27 23-02-2021 23 4   Download

The thesis focuses on analyzing and assessing the real situation of the impact of FDI on import and export in Vietnam in order to create a scientific and practical basis to propose solutions to enhance positive impacts and limit negative impacts. polarity of FDI to import-export in Vietnam.

0p cothumenhmong6 17-07-2020 36 1   Download

We have investigated the thermodynamic properties of the cubic zirconia ZrO2 using the statistical moment method in the statistical physics. The free energy, thermal lattice expansion coefficient, specific heats at the constant volume and those at the constant pressure, CV and CP , are derived in closed analytic forms in terms of the power moments of the atomic displacements.

16p 12120609 01-06-2020 10 1   Download

DFT calculations indicate that the decomposition reaction of nitroethyl benzoates in the presence of 1,3-dimethylimidazolium cation takes place much faster than in the case of the non-catalyzed process. Additionally, our calculations suggest one-step polar mechanism of title reactions.

8p tocectocec 25-05-2020 13 1   Download

The corrosion inhibition efficiencies of two novel Schiff bases, namely (E)-3-[thiophen-2-lmethyleneamino]benzoic acid (T2YMABA) and (E)-4-(5-[(2-phenylhydrazono) methyl]thiophen-2-yl)benzoic acid (PHMT2YBA) on mild steel (MS) in 1.0M HCl solution has been investigated and compared using electrochemical impedance spectroscopy and potentiodynamic polarization analysis.

10p tocectocec 25-05-2020 19 2   Download

In this paper, a simplified method is proposed for deriving equilibrium equations in continuous systems. The new method is indeed the direct applying of Newton’s laws on free body diagram of point.

10p tohitohi 19-05-2020 13 0   Download

The objectives of the thesis: The aim of the studies is to gain fundamental understanding of the role of hydrophobic and polar sequence on folding mechanism of proteins and aggregation of peptides

33p xacxuoc4321 09-07-2019 42 4   Download

Chương 1: Tích phân bội (Multiple Integrals) cung cấp cho các bạn những kiến thức về tích phân kép trên hình chữ nhật (double integrals over rectangles); tích phân lặp (iterated integrals); tích phân kép trên miền tổng quát (double integrals over general regions);tích phân kép trong tọa độ cực (double integrals in polar coordinates).

20p quy06051997 28-06-2016 210 19   Download

Bài báo cáo này đề xuất mô hình dùng Polar Cosine Transform (PCT) và mạng Radial Basis Function (RBF) để nhận dạng mặt người. Ảnh mặt người sau khi được xử lý, tiếp theo chúng tôi dùng Polar Cosine Transform (PCT), với ưu điểm trực giao, bất biến, để rút trích vector đặc trưng cho mạng Radial Basis Function (RBF). Kết quả thử nghiệm được tiến hành trên cơ sờ dữ liệu ảnh YALE, gồm tập ảnh mặt của 15 người khác nhau, mỗi người 11 ảnh, tổng số ảnh là 165, với tỉ lệ nhận dạng đạt 96,92% cho thấy tính khả thi của phương pháp đề xuất.

7p benben121 31-10-2014 118 14   Download

At the time of implantation in the maternal uterus, the trophectoderm of the pig blastocyst is the source of a massive secretion of interferon-gamma (IFN-c), together with lesser amounts of IFN-d, a unique species of type I IFN. This trophoblastic IFN-c (TrIFN-c) is an unprecedented example of IFN-c being produced spontaneously by an epithelium. We therefore studied some of its structural and biochemical properties, by comparison with pig IFN-c from other sources, either natural LeIFN-c (from adult leucocytes), or recombinant. ...

10p system191 01-06-2013 50 6   Download

Cys341 of carboxypeptidase Y, which constitutes one side of the solvent-accessible surface of the S1 binding pocket, was replaced with Gly, Ser, Asp, Val, Phe or His by site-directed mutagenesis. Kinetic analysis, using Cbz-dipeptide substrates, revealed that polar amino acids at the 341 position increased Km whereas hydrophobic amino acids in this position tended to decrease Km.

6p system191 01-06-2013 40 4   Download

In order to study some of its enzymatic properties, phosphatidylinositol synthase 1 (AtPIS1) from the plant Arabidopsis thaliana was expressed in Escherichia coli, a host naturally devoid of phosphatidylinositol (PtdIns). In the context of the bacterial membrane and in addition to de novo synthesis, the plant enzyme is capable of catalysing the exchange of the inositol polar head for another inositol. Our data clearly show that the CDP-diacylglycerol-independent exchange reaction can occur using endogenous PtdIns molecular species or PtdIns molecular species from soybean added exogenously....

6p research12 01-06-2013 34 5   Download

d-Atracotoxins (d-ACTXs) from Australian funnel-web spiders differ structurally from scorpion a-toxins (ScaTx) but similarly slow sodium current inactivation and compete for their binding to sodium channels at receptor site-3. Characterization of the binding of 125 I-labelled d-ACTX-Hv1a to various sodium channels reveals a decrease in anity for depolarized (0 mV;Kdˆ6.5 ‹1.4 nM) vs.polar-ized ()55 mV;Kdˆ0.6‹0.2nM) rat brain synaptosomes.

11p research12 29-04-2013 36 5   Download

The human multidrug resistance protein 2 (MRP2, symbol ABCC2) is a polytopic membrane glycoprotein of 1545 amino acids which exports anionic conjugates across the apical membrane of polarized cells. A chimeric protein composed of C-proximal MRP2 and N-proximal MRP1 localized to the apicalmembraneof polarizedMadin±Darby canine kidney cells (MDCKII) indicating involvement of the carboxy-proximal part of human MRP2 in apical sorting.

11p research12 23-04-2013 31 2   Download

Previous structural andmutagenesis studies indicate that the invariant a-amino and a-carboxyl groups of glutamate receptor agonists are engaged in polar interactions with oppositely charged, conserved arginine and glutamate resi-dues in the ligand-binding domain ofa-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor.To examine the role of these residues (R507 and E727 in the GluR-D subunit) in the discrimination between agonists and anta-gonists, we analyzed the ligand-binding properties of homomeric GluR-D and its soluble ligand-binding domain withmutations at thesepositions....

10p tumor12 22-04-2013 38 3   Download

Flavoproteins are ubiquitous redox proteins that are involved in many biological processes.In the majority of flavoproteins, the flavin cofactor is tightlybut noncovalently bound.Reversible dissociation of flavoproteins into apo-proteinandflavinprostheticgroupyields valuable insights in flavoprotein folding, functionandmechanism.Replacement of the natural cofactorwithartificial flavins has proved tobe especially useful for the determination of the solvent acces-sibility, polarity, reaction stereochemistry and dynamic behaviour of flavoprotein active sites....

16p tumor12 20-04-2013 35 3   Download

As one of the most important families of non-natural poly-mers with the propensity to form well-defined secondary structures, theb-peptides are attracting increasing attention. The compounds incorporatingb-amino acid residues have found various applications in medicinal chemistry and biochemistry.The conformational pool ofb-peptides com-prises several periodic folded conformations, which can be classified as helices, and nonpolar and polar strands.The latter two are prone to form pleated sheets.

10p tumor12 20-04-2013 30 4   Download

Antifreeze glycoproteins (AFGPs) constitute the major fraction of protein in the blood serum of Antarctic noto-thenioids and Arctic cod. Each AFGP consists of a varying number of repeating units of (Ala-Ala-Thr)n, withminor sequence variations, and the disaccharide b-D-galactosyl-(1fi3)-a-N-acetyl-D-galactosamine joined as a glycoside to the hydroxyl oxygen of the Thr residues. These compounds allow the fish to survive in subzero ice-laden polar oceans by kineticallydepressing the temperatureatwhich icegrows ina noncolligative manner....

12p tumor12 20-04-2013 39 4   Download