Danh mục
  • Giáo dục phổ thông
  • Tài liệu chuyên môn
  • Bộ tài liệu cao cấp
  • Văn bản – Biểu mẫu
  • Luận Văn - Báo Cáo
  • Trắc nghiệm Online
Kết quả từ khoá "substitution"
60 trang
28 lượt xem
1
28
Lecture Cryptography: Cryptology overviews - PhD. Ngoc-Tu Nguyen
Lecture Cryptography: Cryptology Overviews introduces the fundamental concepts of cryptography and its applications. The lecture explores core terminologies, classical cipher systems, and the evolution of algorithms in cryptographic science. It sets the stage for understanding the practical use of cryptography in securing information. Please refer to the lecture for more details!
hoatrongguong03
428 trang
32 lượt xem
2
32
Doctoral thesis of Philosophy: The Australian equity market reaction to the 2010 resource tax announcements
This thesis analyses the Australian resources equity market reaction to the 2010 resource tax announcements. These taxes were explicitly designed to meet tax neutrality conditions. Tax neutrality implies that taxes should not incur substitution effects that result in economic inefficiency. These taxes were intended to generate revenue (i.e., an income effect) while not distorting economic incentives.
runthenight04
56 trang
37 lượt xem
3
37
Master thesis Computer science: Amino acid substitution model for rotavirus
In this thesis, using the data from the Viral Genome Resource at National Center for Biotechnology Informa-tion (NCBI), we propose the ROTA model that has been specifically estimated formodeling the evolution of rotavirus.
tamynhan0
12 trang
36 lượt xem
2
36
Influence of substitution of the magnetic 3d metals FOR Mn in perovskite La0.67Ca0.33Mn0.90TM0.10O3 (TM = Fe, Co, Ni) compounds
Influence of substitution of 3d metals for Mn on properties of La0.67Ca0.33Mn0.9 TM0.1O3 (TM = Fe, Co, Ni) compounds was studied. Ferromagnetic – paramagnetic and metals – insulator transitions were significantly affected by Mn-site substitution. However, no observable difference was found in their crystal structure from X-ray diffraction analysis. At room temperature the structure characterization of these compounds gave the single phase and structure is the distortion orthorhombic cell with space group symmetry Pnma. The magnetoresistance measurement showed that the magnetoresistance ratio MR increases until 17% in magnetic field of 0.4 T, and in low magnetic field region (µoH < 0.05 T), MR = 7.5% at 102 K. The investigations of EPR showed that the intensity of resonance line can be well fitted by the expression: I(T) = Ioexp(Ea/kB T).
12120609
6 trang
39 lượt xem
1
39
Synthesis, characterization and crystal structure of pentyl 2-(1H-indole-2-carboxamido)benzoate
Pentyl 2-(1H-indole-2-carboxamido)benzoate (5) is obtained in good yield as stable crystals by reaction of pentyl 2-amino benzoate (6) with indole-2-carbonyl chloride acid (7) in the presence of pyridine. The crystal structure of 5 confirms the presence of intramolecular hydrogen bonding (N-H…O) which produces a six-membered ring, and the molecules are linked together by intermolecular hydrogen forces (N-H…O).
tocectocec
8 trang
76 lượt xem
2
76
Báo cáo khoa học: Effects of a tryptophanyl substitution on the structure and antimicrobial activity of C-terminally truncated gaegurin 4
Gaegurin 4 (GGN4), a 37-residue antimicrobial peptide, consists of two amphipathic ahelices (residues 2–10and 16–32) connected by a flexible loop region (residues 11– 15). As part of an effort to develop new peptide antibiotics with low molecular mass, the activities of C-terminally truncated GGN4 analogues were tested. D 24)37 GGN4, a peptide analogue with 14 residues truncated from the C-terminus of GGN4, showed a complete loss of anti-microbial activity.
research12
7 trang
98 lượt xem
2
98
Báo cáo Y học: Restoring enzyme activity in nonfunctional low erucic acid Brassica napus fatty acid elongase 1 by a single amino acid substitution
Genomicfattyacid elongation 1 (FAE1) clones from high erucic acid (HEA)Brassica napus, Brassica rapaandBras-sicaoleracea, and lowerucicacid (LEA)B. napuscv.Westar, were amplifiedbyPCRand expressed inyeast cells under the control of the strong galactose-inducible promoter. As expected, yeast cells expressing theFAE1genes from HEA Brassicaspp. synthesized very long chain monounsaturated fatty acids that are not normally found in yeast, while fatty acid profiles of yeast cells expressing theFAE1gene from LEA B. napuswere identical to control yeast samples....
tumor12
11 trang
48 lượt xem
3
48
Báo cáo Y học: Monitoring the structural consequences of Phe12 fi D-Phe and Leu15 fi Aib substitution in human/rat corticotropin releasing hormone Implications for design of CRH antagonists
A new human/rat CRH analogue has been synthesized using the Fmoc/tBu solid-phase synthetic protocol. The sequence ofthe new peptide differs from the original in two positions, 12 and 15, at which the native amino acids L-phenylalanine 12 and L-leucine 15 have been replaced by the nonprotein amino acids D-phenylalanine and a-aminoisobutyric acid (Aib), respectively. The high resolution three-dimensional solution structure of [D-Phe12, Aib15]CRH has been determined by 688 dis-tance constraints (656 meaningful NOE and 32 H-bonds distance limits) and 21 angle constraints. ...
tumor12
8 trang
61 lượt xem
3
61
Báo cáo khoa học: A single amino acid substitution of Leu130Ile in snake DNases I contributes to the acquisition of thermal stability A clue to the molecular evolutionary mechanism from cold-blooded to warm-blooded vertebrates
We purified pancreatic deoxyribonucleases I (DNases I) from three snakes, Elaphe quadrivirgata, Elaphe climaco-phoraandAgkistrodon blomhoffii, and cloned their cDNAs. Each mature snake DNase I protein comprised 262 amino acids. Wild-type snake DNases I with Leu130 were more thermally unstable than wild-type mammalian and avian DNases I with Ile130. After substitution of Leu130Ile, the thermal stabilities of the snake enzymes were higher than those of their wild-type counterparts and similar to mam-malian wild-type enzyme levels....
tumor12
9 trang
50 lượt xem
2
50
Báo cáo khoa học: Protein database searches using compositionally adjusted substitution matrices
Almost all protein database search methods use amino acid substitution matrices for scoring, optimizing, and assessing the statistical significance of sequence alignments. Much care and effort has therefore gone into con-structing substitution matrices, and the quality of search results can depend strongly upon the choice of the proper matrix. A long-standing problem has been the comparison of sequences with biased amino acid composi-tions, for which standard substitution matrices are not optimal....
fptmusic
9 trang
71 lượt xem
4
71
Báo cáo khoa học: Effect of valine 106 on structure–function relation of cytosolic human thymidine kinase Kinetic properties and oligomerization pattern of nine substitution mutants of V106
Information on the regulation and structure–function rela-tion of enzymes involved in DNA precursor synthesis is pivotal, as defects in several of these enzymes have been found to cause depletion or deletion of mitochondrial DNA resulting in severediseases.Here, the effect of aminoacid106 on the enzymatic properties of the cell-cycle-regulated human cytosolic thymidine kinase 1(TK1) is investigated.
dell39
12 trang
49 lượt xem
3
49
Báo cáo khoa học: A L225A substitution in the human tumour suppressor HIC1 abolishes its interaction with the corepressor CtBP
HIC1(hypermethylated in cancer) is a tumour suppressor gene located in 17p13.3, a region frequently hypermethylated or deleted in many types of prevalent human tumour.HIC1is also a candidate for a contiguous-gene syndrome, the Miller–Dieker syndrome, a severe form of lissencephaly accompanied by developmental anomalies.
inspiron33
13 trang
49 lượt xem
3
49
Báo cáo khoa học: Aberrant interchain disulfide bridge of tissue-nonspecific alkaline phosphatase with an Arg433 fi Cys substitution associated with severe hypophosphatasia
Various mutations in the tissue-nonspecific alkaline phosphatase (TNSALP) gene are responsible for hypophosphatasia characterized by defective bone and tooth mineralization; however, the underlying molecular mechanisms remain largely to be elucidated. Substitution of an arginine at position 433 with a histidine [TNSALP(R433H)] or a cysteine [TNSALP(R433C)] was reported in patients diagnosed with the mild or severe form of hypo-phosphatasia, respectively.
inspiron33
11 trang
41 lượt xem
2
41
Báo cáo khoa học: Substitution of residues at the double dimer interface affects the stability and oligomerization of goose d-crystallin
d-Crystallin is the major structural protein in avian and reptilian eye lenses, and confers special refractive properties. The protein is a homotetramer arranged as a dimer of dimers. In the present study, the roles of the side chains of Glu267, Lys315, and Glu327, which provide hydrogen bonds at the double dimer interface, were investigated. Hydrophobic side chain sub-stitution led to all mutant proteins having an unstable dimer interface.
vinaphone15
9 trang
58 lượt xem
5
58
Báo cáo khoa học: K182G substitution in DevR or C8G mutation in the Dev box impairs protein–DNA interaction and abrogates DevR-mediated gene induction in Mycobacterium tuberculosis
The DevR response regulator mediates adaptation ofMycobacterium tuber-culosisto various signals that are likely to be encountered within the host such as hypoxia, nitric oxide, carbon monoxide and ascorbic acid. DevR is proposed as a promising target for developing drugs against dormant bac-teria.
cosis54
8 trang
246 lượt xem
60
246
TEACHING WRITING
The teacher puts a box full of words on the board. The words fit together to either make one long sentence or lots of short sentences. The class is divided into strong groups and weak groups. The strong groups write down one long sentence while the weak ones write down as many different short sentences as possible. For stronger groups, the sentence with the most words in the given time is the winner. For weaker groups, the group with the most sentences is the winner.
namson94
14 trang
79 lượt xem
6
79
Báo cáo hóa học: " Research Article Transforming 3D Coloured Pixels into Musical Instrument Notes for Vision Substitution Applications"
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Transforming 3D Coloured Pixels into Musical Instrument Notes for Vision Substitution Applications
dauphong19
11 trang
49 lượt xem
4
49
Báo cáo y học: "Substitution of adeno-associated virus Rep protein binding and nicking sites with human Chromosome 19 sequences"
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Substitution of adeno-associated virus Rep protein binding and nicking sites with human Chromosome 19 sequences
dauphong2
7 trang
75 lượt xem
3
75
Báo cáo y học: "A single-amino-acid substitution in the HA protein changes the replication and pathogenicity of the 2009 pandemic A (H1N1) influenza viruses in vitro and in vivo"
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A single-amino-acid substitution in the HA protein changes the replication and pathogenicity of the 2009 pandemic A (H1N1) influenza viruses in vitro and in vivo
dauphong2
13 trang
74 lượt xem
2
74
Báo cáo y học: " Substitution of the Rev-response element in an HIV-1-based gene delivery system with that of SIVmac239 allows efficient delivery of Rev M10 into T-lymphocytes"
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Substitution of the Rev-response element in an HIV-1-based gene delivery system with that of SIVmac239 allows efficient delivery of Rev M10 into T-lymphocytes...
toshiba21

Giới thiệu

Về chúng tôi

Việc làm

Quảng cáo

Liên hệ

Chính sách

Thoả thuận sử dụng

Chính sách bảo mật

Chính sách hoàn tiền

DMCA

Hỗ trợ

Hướng dẫn sử dụng

Đăng ký tài khoản VIP

Zalo/Tel:

093 303 0098

Email:

support@tailieu.vn

Phương thức thanh toán

Layer 1

Theo dõi chúng tôi

Facebook

Youtube

TikTok

Chịu trách nhiệm nội dung: Nguyễn Công Hà. ©2025 Công ty TNHH Tài Liệu trực tuyến Vi Na.
Địa chỉ: 54A Nơ Trang Long, P. Bình Thạnh, TP.HCM - Điện thoại: 0283 5102 888 - Email: info@tailieu.vn
Giấy phép Mạng Xã Hội số: 670/GP-BTTTT cấp ngày 30/11/2015