... Cho a, b,c không âm Chứng minh : a + b + c ≥ ab + bc + ca Khi có đẳng thức? Giải :Theo BĐT Côsi, ta có : a + b ≥ ab Cộng BĐT theo vế, ta b + c ≥ bc có: c + a ≥ ca 2 (a + b + c) ≥ 2( ab + bc + ca ... đúng: a Với a, b thuộc IR, a+ b >0 a> 0 b>0 b Với x,y thuộc IR, x2+y2 2xy c Với a thuộc IR, d Với a, b thuộc IR, a >0 a b = a − b ÔN TẬP LÍ THUYẾT 2.Cho x,y hai số thực không âm, ta có kết đúng: a ... dương với x thuộc IR : a >0 b 0 c
Ngày tải lên: 03/04/2013, 09:49
... Serological methods Rabbit antisera against Citrobacter strains PCM 1531 and PCM 1487 were prepared as described previously [21] Passive haemagglutination and inhibition of passive haemagglutination ... Fuc and 3-substituted Rha in the molar ratio : These data suggest that the OPS-I and OPS-II have an identical branched tetrasaccharide repeating unit It consists of the main chain containing one ... conclusion was confirmed and the a configuration of ara4dHex established using a NOESY experiment This showed H1,H3 and H1,H5 correlations for Rha at d 4.97/4.06 and 4.97/3.58, which are characteristic...
Ngày tải lên: 23/03/2014, 17:22
báo cáo hóa học: " The effects of a graduated aerobic exercise programme on cardiovascular disease risk factors in the NHS workplace: a randomised controlled trial" pdf
... 41 42 Disease Control and Prevention and the American Heart Association Circulation 2003, 108(1):499-511 Pansarasa O, Castagna L, Colombi B, Vecchiet J, Felzani G, Marzatico F: Age and sex differences ... Chicago, IL, USA) was used for all statistical analyses A P value < 0.05 was considered to be statistically significant The results are reported as mean ± SD values Table 1: Baseline characteristics ... seconds using an automated online gas analyser (Oxycon, Jaeger, Hoechberg, Germany) The system was calibrated for volume and gas concentrations before the start of each test Peak oxygen consumption...
Ngày tải lên: 20/06/2014, 00:20
báo cáo hóa học: " Effects of short duration stress management training on self-perceived depression, anxiety and stress in male automotive assembly workers: a quasi-experimental study" docx
... Matsah, Dr Ahmad Syaarani Bin Yasin, Dr Nik Khairol Reza Bin Md Yazin for technical assistance and Mr Kamarudin Hussin, Research Assistant, for secretarial assistance References Limitations of ... emotional states of depression, anxiety and stress [17] The questionnaire consists of three scales: DASS-Depression Scale (Cronbach's alpha = 0.81), DASS-Anxiety Scale (Cronbach's alpha = 0.85) and ... Blumenthal J, Sherwood A, Babyak M, Watkins L, Waugh R, Georgiades A, Bacon S, Hayano J, Coleman R, Hinderliter A: Effects of exercise and stress management training on markers of cardiovascular risk...
Ngày tải lên: 20/06/2014, 00:20
Báo cáo khoa học nông nghiệp " Sustainable community-based forest development and management in some high-poverty areas in Bac Kan Province ( Report on a Training Course Forest Law )" pdf
... nt nt Nam Nam Nam Nữ Nữ Nữ Nam Nam Nam Nam Nam Nam Nam Nam Nữ Nữ Nữ Nam Nam Nữ Nam Nam Nữ Nam Nam Nữ Nữ Nam Nam Nam Nam Nam Nam Nam Nữ Nữ Nữ Nữ Nam Nam Nam Nam Nam Nam Nam Nam Nam Nam Nam 15 65 ... participants in the training class - The content of the training class: training on forest protection and management act - Place: Peoples committees in Van Minh, Lang San - Training time: August 24th- ... cases Illegally manage animal: 11 cases Illegal forest destruction for farming: cases Illegal exploitation, transporting, purchasing, storing and other situations: 491 cases * Violated situations...
Ngày tải lên: 21/06/2014, 04:20
Báo cáo lâm nghiệp: "Production potential and ecological stability of mixed forest stands in uplands – VI. A beech/larch stand on a mesotrophic site of the Křtiny Training Forest Enterprise" pot
... calculation Stand density was calculated according to standard mensurational practice from the ratio of actual basal area of the particular species and tabular data On the basis of reduced areas ... markedly lower than in larch (Tables and 6) Stand basal area It was already stated in previous papers (Kantor, Pařík 1998; Kantor, Hurt 2003) that the basal area increment dynamics was the most objective ... of Agriculture, established permanent thinning plots in the traditional layout The total area of the stand part is 1.14 ha The stand is situated on a plateau sloping slightly northward at an altitude...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo toán học: "A note on odd cycle-complete graph Ramsey numbers" ppsx
... Lemma 15, Chapter 12) on the independence number of a graph containing few triangles (see also [2] for a more general result) Proposition 2.1 Let G be a graph on n vertices with average degree at ... We start with G = G and I = ∅ and as long as G has a vertex of degree at least d we the following iterative procedure Pick a vertex v ∈ G with degree at least d If Nk (v) in G has size at least ... paper was written we learned that independently of our work Y Li and W Zang [7] obtained a similar result References [1] M Ajtai, J Koml´s and E Szemer´di, A note on Ramsey numbers, J Combinatorial...
Ngày tải lên: 07/08/2014, 06:23
Báo cáo khoa học: "Performance and morphological response of the hybrid poplar DN-74 (Populus deltoides x nigra) under different spacings on a 4-year rotation" pps
... Klinka K., Kayahara G.J., Effects of light on growth, crown architecture, and specific leaf area for naturally established Pinus contorta var latifolia and Pseudotsuga meuziesii var glauca saplings, ... repeated measurement component (γ was excluded ) n Linear regression analysis of SLA as a function of nutrient concentration was undertaken to compare the slope of the relationship among ... width and leaf biomass and area for the main stems indicate that competition reduced the aerial space occupancy of individual crowns and that the amount of foliage they supported as spacing was...
Ngày tải lên: 08/08/2014, 14:21
Báo cáo khoa học: "Delineation in thoracic oncology: a prospective study of the effect of training on contour variability and dosimetric consequences" potx
... Abstract: Introduction : As part of French residents’ radiotherapy training, delineation workstations were available at a national teaching course We report a prospective comparative study of a non ... P, Pointreau Y, Denis F, Lacornerie T, Gibon D, Giraud P: Delineation variation of lung cancer in conformal radiotherapy among radiation oncology residents after an educational course: a prospective ... J, Samson M, Tankink H, Jansen P, Nowak PJ, Krol AD, Schmitz P, Lagerwaard FJ: Evaluation of a target contouring protocol for 3D conformal radiotherapy in nonsmall cell lung cancer Radiother Oncol...
Ngày tải lên: 09/08/2014, 09:21
báo cáo khoa học:" Effect of neck strength training on health-related quality of life in females with chronic neck pain: a randomized controlled 1-year follow-up study" docx
... similar at baseline (table 1) One patient in the endurance training group was excluded after randomization because of diagnosed polymyalgia rheumatica Another patient withdrew from the endurance training ... power calculation was done based on Monte Carlo simulation of ANOVA designs The α-level was set at 0.05 All statistical analyses were performed using STATA (for Windows), version 10 (Stata Corp, ... design, data collection and participated in drafting of the manuscript All authors read and approved the final manuscript Author Details 1Department of Physical and Rehabilitation Medicine, Central...
Ngày tải lên: 12/08/2014, 01:21
Báo cáo y học: " In vitro activities of novel 4-HPR derivatives on a panel of rhabdoid and other tumor cell lines" docx
... VA, Kyritsis AP: Fenretinide activates caspases and induces apoptosis in gliomas Clin Cancer Res 1999, 5(8):2230-2235 Tiwari M, Kumar A, Sinha RA, Shrivastava A, Balapure AK, Sharma R, Bajpai ... cells, but that are also amenable for further modification such as conjugation of radioactive moieties or nanoparticles We believe that conjugation of radioactive moieties or nanoparticles are likely ... increases bioavailability and possibly facilitates crossing the bloodbrain-barrier [29] Additionally, the derivatives that have been conjugated to halogens may allow us to create radio-conjugates...
Ngày tải lên: 13/08/2014, 18:21
Báo cáo y học: "A Drosophila protein-interaction map centered on cell-cycle regulators" potx
... following additional data are available with the online version of this paper Additional data file contains Supplementary materials and methods; Additional data file contains Supplementary Table 1, ... in the Additional data files All interaction data from both screens are listed in Additional data file http://genomebiology.com/2004/5/12/R96 and are also available at [47,50] and at IntAct [51] ... (see Additional data file 5) These data demonstrate the capacity of relatively small sets of proteins to generate high-confidence domain associations A complete list of all domains and domain pairs...
Ngày tải lên: 14/08/2014, 14:21
cambridge ielts 5 test 4 general training test a
... Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ... Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ... Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com ( Word Reader - Unregistered ) www.word-reader.com...
Ngày tải lên: 20/02/2015, 08:45
An action study on a process genre approach to teaching IELTS writing task 2 to non english major students at band 4 5 5 5 in a vietnamese university setting
... solutions 2 People‟s lives (cont.) Problems and solutions (cont.) It was all new once Discussing advantages and advantages and disadvantages 4 It was all new once Discussing (cont.) disadvantages ... charts, diagrams, tables, and maps Task requires candidates to write a composition, usually an essay, in response to a proposition or question In both tasks, candidates are assessed on their ability ... a certain text type 1.3 Genre-based approaches 1.3.1 Model of genre-based approaches Hammond and Derewianka (2001) define the genre-based approach as the way to language and literacy education...
Ngày tải lên: 25/10/2016, 09:32
Some studies on a probabilistic framework for finding object-oriented information in unstructured data
... the 22nd international conference on Machine learning [10] Eric Chu, Akanksha Baid, Ting Chen, An-Hai Doan, and Jeffrey F Naughton A relational approach to incrementally extracting and querying ... solution based on its approach with different advantages, however, they also have some shortcomings Information Extraction based solution has low scalability and low adaptability while Text Information ... website usually has its structured information such as location, number of bedrooms, price and area A professor homepage usually contains information about his education, email, department and the...
Ngày tải lên: 23/11/2012, 15:04
The 25 most difficult questions you'll be asked on a job interviewThe 25 most difficult questions you'll be asked on a job interview
... For example, if the organization is known for strong management, your answer should mention that fact and show that you would like to be a part of that team If the company places a great deal of ... good manager? Can you give me some examples? WWW.RabElMagd.com WWW.RabElMagd.com Do you feel that you have top managerial potential? Keep your answer achievementand ask-oriented Rely on examples ... more at your age? Say that this is one reason that you are conducting this job search Don't be defensive 23 What you feel this position should pay? Salary is a delicate topic We suggest that you...
Ngày tải lên: 07/02/2013, 09:37
Consolidation Chareteristics based on a direct analytical solution of the Terzaghi Theory
... Inflection Sridharan, A and Prakash, K 1995 Discussion on Point Method Geotechnique, 47 (1): 199-200 ‘Limitations of Conventional Analysis of Consolidation Robinson, R.G 1999 Consolidation Analysis ... on Results 2007 Diagnostic Curve Methods for Geomechanics, ASCE, (1): 75-79 of One-dimensional Consolidation Tests, Soils and Sivaram, B and Swamee, P.K 1977 A Computational Foundations, Japan, ... The actual theoretical one-dimensional consolidation relationship between average degree of consolidation U and the time factor T obtained from the Terzaghi theory may, depending on the range...
Ngày tải lên: 21/03/2013, 14:09
Bộ đề Hóa 4&Đáp án TNKQ ôn thi TN THPT.08+
... ta thu 6g kết t a Nồng độ giá trị sau đây: Chọn đáp án A 0,002M B 0,0035M C 0,004M D Kết khác Bài : 15237 Người ta phân biệt đồ dùng làm da thật da nhân tạo (PVC) cách sau đây? Chọn đáp án A ... electron phân lớp chót Tổng số electron nguyên tử M là: Chọn đáp án A 24 B 25 C 27 D 29 Đáp án : (C) Bài : 15244 Cho biết tổng số electron ion 42 Trong hạt nhân X Y có số proton số nơtron Số ... X hợp chất hữu ch a C, H, O X tham gia phản ứng tráng gương phản ứng với dung dịch NaOH Đốt cháy hết a mol X thu 3a mol hỗn hợp khí gồm Công thức cấu tạo X là: Chọn đáp án A B C D Đáp án : (C)...
Ngày tải lên: 29/06/2013, 01:26