云南高校图书馆联盟文献共享服务平台- BREECH

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Constitutive model of viscoelastic dynamic damage for the material of gas obturator in modular-charge howitzer: 《Defence Technology（防务技术）》2024年第9期203-216,共14页Zhonggang Li Longmiao Chen Yifan Li Yufeng Jia Quan Zhang; National Natural Science Foundation of China (Grant No. U2141246)。; In order to investigate the mechanical response behavior of the gas obturator of the breech mechanism,made of polychloroprene rubber(PCR), uniaxial compression experiments were carried out by using a universal testing...; 关键词：Breech mechanism Gas obturator Polychloroprene rubber Constitutive model Strain rate Damage

Prevalence, Maternal and Perinatal Prognosis of Breech Delivery Compared to That of the Vertex in 242 Cases for 484 Controls at Ségou Hospital in Malti: 《Open Journal of Obstetrics and Gynecology》2024年第9期1414-1421,共8页Tidiani Traoré Famakan Kané Abdoulaye Kassogué Seydou Traoré Seydou Z. Dao Balilé Harber Sabré Koné Kassoum Sidibé Brahima Donigolo Babou Traoré Adama Coulibaly Abdrhamane Diarisso Alima Sidibé Mamadou Sima Augustin Théra Youssouf Traoré Ibrahima Teguété Niani Mounkoro; Introduction: Breech birth has always been a subject of great interest because of its risks of perinatal morbidity and mortality. Aim: The aim of our study was to compare the maternal and perinatal prognosis of breech...; 关键词：Delivery BREECH VERTEX Prognosis MALI

Study of relationship between motion of mechanisms in gas operated weapon and its shock absorber: 《Defence Technology（防务技术）》2024年第3期42-54,共13页Jiri Balla Roman Vitek Dung Nguyen Van Zbynek Krist Hung Nguyen Van; supported by the Research project VAROPS(Military autonomous and robotic assets)of the Ministry of Defence of The Czech Republic;by the Specific Research Support Project(Grant No.SV22-201)financed from funds of the Ministry of Education,Youth and Sports of The Czech Republic。; The article deals with the motion of the breech block carrier and the weapon casing of an automatic weapon mounted on a flexible carriage and the base of the weapon.Earlier works,which did not consider the dynamic pro...; 关键词：Shock absorber Gas-operated weapon Force-impulse diagram Recoil system Breech block carrier

What to do when it is breech? A state-of-the-art review on management of breech presentation: 《World Journal of Obstetrics and Gynecology》2023年第1期1-10,共10页Afshin Azimirad; Any non-cephalic presentation in a fetus is regarded as malpresentation.The most common malpresentation,breech,contributes to 3%-5%of term pregnancies and is a leading indication for cesarean delivery.Identification o...; 关键词：Labor presentation Breech presentation Obstetric delivery Cesarean section External cephalic version Fetal version

Research and development of training pistols for laser shooting simulation system被引量：1: 《Defence Technology（防务技术）》2020年第3期530-534,共5页Algimantas Fedaravicius Kestutis Pilkauskas Egidijus Slizys Arvydas Survila; This research was funded by the grant from Research Council of Lithuania.Grant No.S-MIP-17-94.; Firearm shooting simulators are effective means for training the personnel in armed forces,police and shooting athletes.Shooter-weapon is a complex biomechanical system,therefore the best training quality is achieved ...; 关键词：Recoil dynamics Handgun Breech lock SIMULATOR

Effect of Stimulating the BL67 Point on Fetal Correction from Breech to Cephalic Presentation and Natural Delivery after the 36 Weeks of Pregnancy: A Randomized Clinical Trial被引量：3: 《Reproductive and Developmental Medicine》2020年第2期103-108,共6页Khatereh Sourani Abolfazl Mohammadbeigi Nasim Khademi Azadeh Asgarian Imaneh Khaki Zohreh Ahmadi; Qom University of Medical Sciences,Iran by grant number of 96894.; Objective:Various techniques are proposed for changing fetal presentation.We aimed to assess the effect of BL67 point stimulation on correcting breech presentation and natural delivery in women at 36-38 gestational we...; 关键词：BREECH Cesarean Section Cephalic CHILDBIRTH Delivery

External Cephalic Version: A Single Centre Experience: 《Open Journal of Obstetrics and Gynecology》2014年第6期294-299,共6页Kassam Mahomed Poornima Amaranarayana Ibinabo Ibiebele; Incidence of caesarean section for breech presentation has increased markedly. External cephalic version (ECV) is effective in reducing non cephalic presentation at births and caesarean section (CS) for breech present...; 关键词：ECV BREECH Labour CAESAREAN PREDICTORS

Pull Breech out versus Push Impacted Head up in Emergency Cesarean Section: A Comparative Study被引量：2: 《Open Journal of Obstetrics and Gynecology》2014年第6期260-265,共6页Hend S. Saleh Gamal A. Kassem Mohamed El Said Mohamed Moustafa A. Ibrahiem Manal M. El Behery; Objective: To compare maternal and fetal outcome associated with two methods Reverse breech extraction versus Head pushing to deliver the impacted fetal head in advanced labor requiring emergency Cesarean section. Met...; 关键词：Deeply Engaged HEAD OBSTRUCTED Labor CESAREAN Section Reverse BREECH Extraction HEAD PUSH Method

Measurement System of Uniformity between Breech Horizontal Platform and Datum Tube Axis of Rocket Artillery被引量：1: 《Semiconductor Photonics and Technology》2007年第3期235-237,共3页GUO Rui MA Hong YAN Yu-feng BAI Su-ping; The purpose of this development is to detect the parallelism between the breech horizontal platform and the datum tube axis of the rocket artillery. The located aiming mechanism at the muzzle and located adjustment me...; 关键词：rocket artillery AUTOCOLLIMATOR electronic level instrument UNIFORMITY

Discussion on Mechanism of Breech-Blow Caused by Propellant Charge被引量：1: 《Defence Technology（防务技术）》2007年第4期256-261,共6页贠来峰芮筱亭陈涛王浩邱从礼; Sponsored by National Defence Prestudy Foundation of China(40406010401); From the view point of launch safety caused by fracture of propellant charge,this paper points out that the safety criterion of pressure wave is inadequate to evaluate the launch safety of propellant charge based on t...; 关键词：爆炸力学发射安全推进充量内弹道枪

BREECH