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1Academic Journal
مصطلحات موضوعية: Biophysics, Biochemistry, Medicine, Biotechnology, Plant Biology, Space Science, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, surface structure due, significant interest due, scanning electron microscopy, quantitative measurement technique, printed flow cell, potassium sulfate results, large area measurements, important step forward, enables unequivocal demonstration, corrode ∼ twice, boron doped diamond, 72 h period, qualitative using techniques, methodology also represents, found considerable use, bdd material properties, bdd electrode lifetimes, freestanding polished bdd, 2 , 1 nm h, bdd electrodes integrated, bdd anodic corrosion
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2Academic Journal
المؤلفون: Michael Filippi, Tim Möller, Remigiusz Pastusiak, Erhard Magori, Benjamin Paul, Peter Strasser
مصطلحات موضوعية: Biophysics, Medicine, Physiology, Biotechnology, Plant Biology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, thin catalyst coatings, relevant electrode sizes, present approach builds, monopolar plate configuration, important step forward, gap alkaline aem, acid cem system, enables multipoint front, 2 , 2 , small scale electrolyzers, high resistivity cathodes, work reports, remained elusive, increased performance, field functionality, design represents, 100 cm
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3Academic Journal
المؤلفون: Ram Jha, Alexander Kinna, Alastair Hotblack, Reyisa Bughda, Anna Bulek, Isaac Gannon, Tudor Ilca, Christopher Allen, Katarina Lamb, Abigail Dolor, Ian Scott, Farhaan Parekh, James Sillibourne, Shaun Cordoba, Shimobi Onuoha, Simon Thomas, Mathieu Ferrari, Martin Pule
مصطلحات موضوعية: Biochemistry, Cell Biology, Genetics, Molecular Biology, Neuroscience, Biotechnology, Immunology, Developmental Biology, Cancer, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Information Systems not elsewhere classified, universal car adaptors, important step forward, il12 kdel retention, displaceable cyclic peptide, cell inducible junction, molecule control system, precisely control, system comprises, controlled system, work represents, wide availability, therapeutic interventions, low toxicity, highly desirable, excellent biodistribution, effective small, domain antibody, designer small
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4Academic Journal
مصطلحات موضوعية: Biophysics, Biochemistry, Medicine, Biotechnology, Plant Biology, Space Science, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, surface structure due, significant interest due, scanning electron microscopy, quantitative measurement technique, printed flow cell, potassium sulfate results, large area measurements, important step forward, enables unequivocal demonstration, corrode ∼ twice, boron doped diamond, 72 h period, qualitative using techniques, methodology also represents, found considerable use, bdd material properties, bdd electrode lifetimes, freestanding polished bdd, 2 , 1 nm h, bdd electrodes integrated, bdd anodic corrosion
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5Academic Journal
المؤلفون: Michael Filippi, Tim Möller, Remigiusz Pastusiak, Erhard Magori, Benjamin Paul, Peter Strasser
مصطلحات موضوعية: Biophysics, Medicine, Physiology, Biotechnology, Plant Biology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, thin catalyst coatings, relevant electrode sizes, present approach builds, monopolar plate configuration, important step forward, gap alkaline aem, acid cem system, enables multipoint front, 2 , 2 , small scale electrolyzers, high resistivity cathodes, work reports, remained elusive, increased performance, field functionality, design represents, 100 cm
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6
المؤلفون: Ram Jha, Alexander Kinna, Alastair Hotblack, Reyisa Bughda, Anna Bulek, Isaac Gannon, Tudor Ilca, Christopher Allen, Katarina Lamb, Abigail Dolor, Ian Scott, Farhaan Parekh, James Sillibourne, Shaun Cordoba, Shimobi Onuoha, Simon Thomas, Mathieu Ferrari, Martin Pule
مصطلحات موضوعية: Biochemistry, Cell Biology, Genetics, Molecular Biology, Neuroscience, Biotechnology, Immunology, Developmental Biology, Cancer, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Information Systems not elsewhere classified, universal car adaptors, important step forward, il12 kdel retention, displaceable cyclic peptide, cell inducible junction, molecule control system, precisely control, system comprises, controlled system, work represents, wide availability, therapeutic interventions, low toxicity, highly desirable, excellent biodistribution, effective small, domain antibody, designer small
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7Academic Journal
المصدر: Vietnam Journal of Science and Technology; Vol. 65 No. 3B (2023): Tập 65 - Số 3 - Tháng 3 năm 2023; 34 ; Tạp chí Khoa học và Công nghệ Việt Nam - B; Tập. 65 Số. 3B (2023): Tập 65 - Số 3 - Tháng 3 năm 2023; 34 ; 1859-4794
مصطلحات موضوعية: 5÷300 vòng/phút. Thiết bị gia nhiệt hóa rắn chuyên dụng: nhiệt độ gia nhiệt 40-90o C, độ lệch nhiệt độ tại các vị trí ±2o C. Sơ đồ quy trình chế tạo hỗn hợp phủ chống cháy được mô tả ở hình 2. Hình 2. Sơ đ ồ quy trình chế tạo vỏ chống cháy cho nhiên liệu ballistit. Hỗn hợp polyme - chất độn thu được bằng phương pháp trộn PBMA và bột mica theo tỷ lệ 1:1, thời gian 10-40 phút ở nhiệt độ 80-90o C để thu được hỗn hợp đồng nhất, sau đó làm nguội đến 20o C. Sử dụng máy khuấy chân không hòa tan hoàn toàn peroxit bằng BMA trư ớc khi trộn cùng với hỗn hợp polyme - chất độn trong thời gian 100-120 phút. Sau khi thu được hỗn hợp đồng nhất, cho polyeste không no ПН-609-21M và chất xúc tiến hóa rắn vào tiếp tục trộn, độ chân không p≤10 mm Hg, trong thời gian 10-20 phút. Hỗn hợp tạo thành được sử dụng để phủ chống cháy cho thỏi nhiên liệu ballistit bằng phương pháp rót. Nhiệt độ hóa rắn lựa chọn là 45-50o C, thời gian hóa rắn 10-20 giờ. Công đoạn hóa rắn được thực hiện trên thiết bị gia nhiệt do Viện Thuốc phóng Thuốc nổ chế tạo. Phương pháp nghiên cứu - Nghiên cứu lựa chọn thành phần hỗn hợp chống cháy. - Độ phân tán đồng đều chất độn chống cháy bằng kính hiển vi điện tử. - Nghiên cứu tối ưu hóa thời gian hóa rắn hỗn hợp chống cháy bằng cách đánh giá độ bền vỏ chống cháy và dính nhiên liệu - vỏ chống cháy. - Kiểm tra sự bong tách nhiên liệu - vỏ chống cháy bằng thiết bị chụp X-quang New oriental 1000 CA . Trộn PBMA, mica Trộn BMA, peroxit belzoil Trộn 4 thành phần Hỗn hợp chất chống cháy Trộn Polyeste, dietylanilin Định lượng PBMA Định lượng mica Định lượng BMA Định lượng peroxit belzoil Định lượng polyeste Định lượng dietylanilin Phủ chống cháy thỏi nhiên liệu Sấy hóa rắn bột Hình 2. Sơ đồ quy trình chế tạo vỏ chống cháy cho nhiên liệu ballistit. Hỗn hợp polyme - chất độn thu được bằng phương pháp trộn PBMA và bột mica theo tỷ lệ 1:1, sau đó Research and development of a fireproof coating under low-temperature conditions for ballistite fuel for a main rocket engine Van Hung Nguyen, Huu Thanh Tran, Van Khuong Pham, Van Diep Doan, Duc Long Nguyen Institute of Propellants and Explosives, General Department of Defense Industry Received 8 November 2022, accepted 9 December 2022 Abstract: This paper presents the results of manufacturing an inhibitor layer for double-base propellant grain, with 3.5% dinitrotoluene. Curing system based on polybutylmetaacrylate and unsaturated polyester. Optimal technology parameters: curing temperature 45-50o C, curing time is 12-16 hours, diethylaniline content 0.5-1%. The post-curing material has high mechanical properties (tensile strength up to 16.2 MPa, fuel adhesion strength - flame retardant shell up to 3.8 MPa). Static and burning testing results at the Institute of Propellants and Explosives, General Department of Defence Industry meet the requirements. The research results are an important step forward in combining scientific theory and practice in manufacturing fireproof shells for ballistite fuel ingots at low temperature, supplementing existing technologies in Vietnam, and meeting the requirements of rocket industry development in the coming time. Keywords: b, mục tiêu bay, thỏi nhiên liệu ballistit, vỏ chống cháy
وصف الملف: application/pdf
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8Image
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
9Image
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
10
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
11Image
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
12Image
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
13
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
14
مصطلحات موضوعية: Medicine, Cell Biology, Biotechnology, Science Policy, Infectious Diseases, Biological Sciences not elsewhere classified, two ties acted, sector organization using, important step forward, enhance workplace practices, follower positive outcomes, link leader character, 11 character dimensions, leader character, follower dyads, 11 inter, character matters,
%22">xlink ">, subjective well, partial correlations, organizational commitment, lagged cross, findings revealed, data better, conceptual development, central dimension, based analysis, 22 offices -
15Academic Journal
المؤلفون: Emmanuel Reyes-Francis, Carlos Echeverría-Arrondo, Diego Esparza, Tzarara López-Luke, Tatiana Soto-Montero, Monica Morales-Masis, Silver-Hamill Turren-Cruz, Iván Mora-Seró, Beatriz Julián-López
مصطلحات موضوعية: Ecology, Biological Sciences not elsewhere classified, Physical Sciences not elsewhere classified, white light illumination, temperature evaporation techniques, important step forward, hinder industrial scalability, ordered double perovskite, 6 , 2 , often involve high, highly crystalline cs, free perovskite materials, energy costs associated, perovskite production, limitations associated, various stimuli, technological advancement, study represents, study presents, solvent plays, resulting solid, replace pb, previous reports, polar solvent, mediated synthesis, inert atmosphere, energy milling, elevated temperatures, effective synthesis