Evaluation of Geological Hazards for Landuse Planning in Nabq Protectorate, Southeastern Sinai Using GIS Techniques

Nabq protectorate is one of wonderful natural places in Egypt. It is characterized by diversity of bio-lives such as mangrove forests, coral colonies, wild life plants and migratory birds. Ongoing growth of tourism industries at Sharm El Sheikh northward into the Nabq protectorate causes severe hazards on its natural resources. The aim of the present study is to assess the present geo-environmental hazards in the Nabq protectorate. Assessment includes the analysis of satellite images, topographical, geological and other ancillary geological data using GIS technology. GIS data analyses indicate that the area is under threat from some of geo-hazards. Rough topography and mass wasting with high probability of flash flooding threaten different constructions in this area. The mobilization of coastal sand dunes, wave action and tidal currents are natural impacts on Nabq ecosystems, where moved dunes leave clay soils that are removed in some places by tropical storms increasing sea water turbidity that threaten the corals and other living organisms in the tidal flat region. The seismic activity hazard in the study area is usually active on lineaments extending parallel to the trend of the Gulf of Aqaba-Dead Sea transform fault where the Nabq protectorate occupies its southern segment. Unwise planning activities destroy the natural environmental resources in Nabq area by construction of new resorts on mangrove forests, coral colonies and raised beaches. Hazard assessment identifies land suitability and land use maps that are clearly exhibit models of traditional dams and buffer strips on coastal zone and highways as well as around the Bedouin communities which are worked on tourism and fishing. These maps are urgent in need of an assessment and rehabilitation program to mitigate geo-hazard.

Radioactivity Levels and Soil-to-Plant Transfer Factor of Natural Radionuclides from Protectorate Area in Aswan, Egypt

The aim of this study is to determine the transfer factor soil-to-plant and to assess the concentration level of natural and artificial radionuclide (238U, 226Ra, 228Ra, 232Th, 40K and 137Cs) in samples from Saluga and Ghazal Protectorate area in Aswan, Egypt, by using High Pure Germanium detector (HPGe) Environmental Radioactivity Measurements Labrotary in faculty of science Qena. Reported values for natural radionuclides ranged from 8.81 ± 0.64 to 28.88 ± 2.10, from 6.98 ± 0.51 to 26.01 ± 1.89, from 12.29 ± 0.89 to 33.32 ± 2.43, from 12.53 ± 0.91 to 32.81 ± 2.39 and from 383.90 ± 27.95 to 711.98 ± 51.83 Bq.kg-1 for 238U, 226Ra, 228Ra, 232Th and 40K, respectively. 137Cs activity concentration was found to be in the range from 0.36 ± 0.03 to 9.73 ± 0.71 Bq.kg-1 and was calculated through transfer factor TF reported in this article.

Tuva, April 1914: Incorporation as a Russian Protectorate

Scholarly narratives concerning Tuva becoming a protectorate of Czarist Russia tend to contextualise this action within Russia’s rivalry with China.The 1911 Chinese Revolution provided an opportunity to annex Tuvan territory,culminating in Tuva becoming the final territorial expansion of the Empire before the Bolshevik Revolution.This research showcases that the Tuvan people were intent on much closer relations with newly independent Mongolia.The author argues that the Tuvan people belonging to the Turkic family of nations shared important values with and identified much more closely with Mongolia than Russia due to their common religion:Buddhism.The author stresses the fact that the increasing presence of Russians in Tuva in the mid 19th century resulted in the acknowledgement of two highly unfamiliar cultures and viewpoints.Utilising primary sources this work sheds light on the debates and choices Russia faced concerning Tuva and the opposition maintained by the new Mongol entity intent on unifying under its auspices peoples which were considered very close if not the same.This research highlights the Tuvan predicament as being located in more of a triangular contest than what is usually presented as a bilateral power struggle.

The Tamale Local Boy Scouts Association in the Northern Territories Protectorate in the 1920s

In 1907,military leader Robert Baden-Powell started the Boy Scouts Association in England as the British colonial government officers instituted Tamale village as the administrative centre of the Northern Territories Protectorate.Sam Yarney worked with Frank Collyer the European bank cashier and scoutmaster who started the Boy Scouts in the Gold Coast Colony in 1914,the year the First World War started.In 1922,Governor Gordon Guggisberg,who was brigadier general during the war was the chief scout.He reorganized the Local Boy Scouts Association in the Tamale Government School that received select boys from various schools in the Northern Territories Protectorate.The schoolboys excelled in the Standard VII and Civil Service Examinations to work with the government institutions and train as teachers and telegraphists.Arthur James Philbrick the chief scout commissioner of the Northern Territories employed Yarney as the assistant scout commissioner in the Southern Province to take on the staff of the reorganized Tamale Local Boy Scouts Association and register the 1st Tamale Troop.The scout officers subscribed to a Scout Fund to buy kit,for the schoolboys who passed the Tenderfoot Tests to buy uniforms and perform at events.

Evaluation of Protector 700 Wd in Controlling Tobacco Pests in Tanzania

In Tanzania, tobacco is an important cash crop benefiting most farmers and stakeholders. However, the crop is characterized by a low yield per unit area. Several factors are responsible for the low yield and quality of tobacco, among which are damages caused by the insects and other pests. Major insect pests of tobacco are cutworms (Agrotis spp), budworms (Heliothis virescens (F.)), (Lepidoptera Noctuidae) and aphids (Myzus persicae, Aphis tabaci) (Homoptera: Aphididae). These pests adversely affect crop growth, yield and leaf quality. In order to reduce insect attack in tobacco, applying pesticides is a critical management practices. In Tanzania, various pesticides have been approved for use in controlling the pests. Currently, farmers are using Bamethrine 2.5 EC to control the pests. The Pesticide named Protector 700 WG with an active ingredient imidacloprid 700 g/kg is a new product introduced in Tanzania during the 2021/22 crop season. Research trials were conducted in three research sites, namely Ulowa-Kahama, Tumbi-Tabora and Mtanila-Chunya, on Protector 700 WG efficacy in different rates, 15 g, 20 g, and 25 g each dissolved in 20 litres of water. The Protector 700 Wg was compared with the standard pesticide (Bamethrin 2.5 EC). Absolute control was also inclusive where the plot had no application of pesticides. The results showed that Protector 700 WG at all rates outweigh the commonly used pesticide. The difference in the number of pests between Protector 700 WG and Bamethrin 2.5 EC was significantly at P < 0.005 also, in dry and green weights, the yield was significantly different at P < 0.005. However, when yield and number of insects were compared among the rates of protector, there was no significant difference. From these results, farmers are advised applying Protector 700 WG at the rate of 0.15 kg/ha by dissolving it in 200 litres of water.

基于拉格朗日功能平衡法的单轨吊失速保护器触发理论分析

通过假设分步法从机器人学的角度对单轨吊机车失速保护器触发装置进行运动学分析,并对点位进行了详细描述。采用拉格朗日功能平衡法对失速保护器触发机构中的滑动轴位移状况建立了完整的动力学数学模型,通过该模型可以描述在运动过程中的滑动轴位移与运行速度、各部件参数之间的关系。借助Adams软件构建虚拟样机模型进行动力学仿真分析,得出所需的速度-位移仿真结果图。分析结果表明,滑动轴的位移与运行速度有关,当运行速度到达所设定临界值2 m/s时,滑动轴能够伸出足够长度以满足失速保护工作要求,符合数学模型的预期计算。

19世纪中叶法国公使对巴黎外方西藏传教会进藏活动态度之嬗变

1848至1866年间,因进藏活动屡屡受阻,巴黎外方西藏传教会多次求助法国驻华公使,后者的态度由之前的“竭力”支持、“鼎力”相助逐渐转变为后来的“尽力”劝退,甚至可以说是“抛弃”。法国公使们对西藏传教会进藏活动态度之嬗变,一方面源于当时清朝中央同西藏地方两级政府通力协作坚决抵制法国传教士进藏;另一方面则是因为新形势下法国政府基于对华“合作”政策选择放弃其“保教”立场。清朝中央同西藏地方通力协作成功阻断西藏传教会进藏活动,既反映出当时西藏地方基于国家安全大局的深思熟虑,又反映出清朝中央对西藏地方的重视和体恤,同时彰显出中国中央政府一直以来严密的治藏方略及其不容西方擅入藏地、染指西藏的坚定外交立场。

防雷插座电压保护水平试验方法解析

本文解析了防雷插座电压保护水平的试验方法。首先,介绍了用于测试防雷插座电压保护水平两个常用标准IEC61643-11和UL1449的不同要求。其次,基于IEC61643-11和UL1449标准对防雷插座电压保护水平进行试验及分析。最后,总结了两种测试方法的优缺点,并指出在实际应用中应根据具体需求选择适合的测试方法,以确保防雷插座的性能和质量。

Duraphat与Fluor Protector抑制固定正畸矫治中牙釉质脱矿的比较研究

目的使用激光龋齿探测仪,比较两种含氟物Duraphat与Fluor Protector抑制固定正畸矫治中牙釉质脱矿的临床效果。方法选取接受直丝弓固定矫治的12~18岁青少年患者60例,采用自身对照法,试验组A右上前牙及前磨牙涂布Fluor Protector,试验组B左下前牙及前磨牙涂布Duraphat,对照组A左上前牙及前磨牙不使用任何药物,对照组B右下前牙及前磨牙仅涂布0.9%的氯化钠水溶液。分别于患者粘接正畸托槽前、粘接托槽后1个月、3个月使用激光龋齿检测仪测试受试牙牙面并记录荧光值(DD),应用单因素方差分析比较各组数值是否有统计学差异。结果①正畸托槽粘接后1个月、3个月时,2组涂布氟漆试验组的DD值均低于2组未涂布氟漆的对照组(P<0.05),说明Duraphat与Fluor Protector两种氟漆均显示了明显抑制釉质脱矿的能力。②正畸托槽粘接后1个月、3个月时,涂布Flour Protector的试验组A与涂布Duraphat的试验组B的DD值间比较差异无统计学意义(P>0.05),说明两种不同浓度的氟保护漆在抑制牙釉质脱矿的能力方面没有明显优劣。结论①接受固定矫治的患者存在釉质脱矿的易感性。②Duraphat与Fluor Protector两种不同浓度的氟化物对正畸过程中牙釉质的脱矿均有抑制作用,二者抑制脱矿的能力没有明显差异。③DIAGNOdent激光龋齿检测仪适合临床探查釉质的脱矿及龋损,对釉质表面的改变感应相当敏锐,帮助医师对龋病做出早期诊断,及早监控并采取合适的措施。

有源降噪入耳式耳机声衰减实验测量及对比研究

针对有源降噪入耳式耳机声衰减测量,对比研究了4种典型的测量方法,包括真耳听阈衰减法(REAT)、等响法(LB)、真耳内置传声器法(MIRE)和专用声学测试装置法(ATF)。依据该类耳机的特点设计了测量装置、实验环境和实验方案,开展了3款耳机的测量研究。结果表明,对于无源声衰减测量, MIRE方法与作为护听器“黄金”标准的REAT方法相比,中高频差异在±3 dB范围内,而MIRE方法在低频更准确;对于有源声衰减测量, MIRE方法与LB方法的结果接近,差异在±2 dB范围内,且MIRE方法更易于操作。MIRE方法有较高的测试效率和准确性,是测量有源降噪入耳式耳机声衰减的一种有效方法。

基于下肢生物力学特性的膝关节变刚度护具设计

针对全民健身运动人们对于可穿戴运动护具产品不断增长的使用需求,需解决现有预制型护具中存在的防护性能不足、运动穿戴匹配度低等问题。首先,采用逆向工程、服装压力计算理论等关键技术与方法对皮肤形变、护具压力等关键参数进行采集,定性与定量分析了人体运动过程中,下肢皮肤形变与曲率压力分布区域变化规律,并构建人体膝关节护具功能分区模型;其次,根据不同划分区域,完成了膝关节变刚度护具分区结构设计;然后,采用有限元仿真方法构建膝关节-护具有限元模型,对比分析多组护具穿戴条件下的接触压力分布规律;最后,结合护具穿戴压力与肌电采集实验,验证膝关节变刚度护具可以有效优化膝关节压力分布,提高穿戴贴合度和提升运动表现。

A Novel Multi-Functional Leakage Current Protector IC Design

A novel type of leakage current protector chip,implemented in the mixed-signal 0.6μm CMOS process,is presented. This chip has the advantages of low power dissipation （10mW）, accurate protection control based on digital response delay time and integration of multi-functions such as leakage current/over-voltage/over-load detection and protection,auto switch-on and so forth. Additionally, the chip is programmable to suit different three-level protection applications with a high anti-interference ability.

基于AHP-熵值法的板式定制家具护角设计评价

针对板式定制家具包装内护角进行需求分析,并在此基础上,采用层次分析法(AHP法)及熵值法建立板式定制家具护角设计评价指标体系。确定了护角设计评价指标的综合权重,利用模糊综合评价法建立板式定制家具护角设计评价模型,并对3种典型板式定制家具护角进行了实例研究,实现了护角设计的定量评价。其中的模型与方法对优化板式定制家具护角设计及护角方案决策具有较大的参考价值。

基于轻量化YOLOv7的井下高压场景安全识别研究

为了使杨柳煤矿安全监测平台精准快速地识别机电人员高压作业场景中存在的不安全行为,以井下中央变电所为例,聚焦绝缘护具佩戴情况设计安全识别框架。基于YOLOv7目标检测算法引用部分卷积(PConv),提高模型在处理遮挡或缺失画面的鲁棒性和泛化能力;融合快速神经网络结构(FasterNet),降低计算冗余优化检测性能;最后融合时间空间注意力模块(CBAM),提高算法的特征提取能力。实验结果表明:轻量化处理后较原模型体积缩小30.5%,计算量减少23.7%,识别平均精度可达97.3%,单张图片检测速度提升38.1%。在复杂背景下小目标检测任务中有效地解决了漏检问题。

三星堆出土文物蕴意解读——以唐卡画中的护法神鹰狼合体形象与三星堆出土文物青铜神坛的神兽底座为例

近年来,四川省广汉市三星堆先后出土了大量的文物。同时,在四川、云南、甘肃、青海、西藏等西南多民族交接地区也发现了大量的民间手抄文献。文章以上述相关文物与文献资料为研究基础,以唐卡画中的护法神鹰狼合体形象与三星堆青铜神坛神兽底座的文化内涵为切入点,对相关文物、文献、民俗资料进行互识、互证、互补研究。认为青藏高原及其周边地区各兄弟民族之间交往交流交融的历史至少可以上溯至3000多年以前,为铸牢中华民族共同体意识提供了客观科学的史料依据。

保护接地阻抗载流能力要求及测试标准差异探讨

电气设备在产品设计、制造、销售和使用时应最大程度降低对生命、健康和财产损害的风险,并达到可接受的水平。医用电气设备的保护接地是在基本绝缘失效的单一故障情况下,作为一重防护,将故障电流经接地连接回路引导到网电源的保护接地。结合IEC 60601-1与CAN/CSA-C22.2 No.60601-1这两个标准的最新版本,阐述了保护接地阻抗载流能力要求及测试方法的差异。旨在帮助相关方在产品设计时考虑产品预期销售国家关于设备保护接地阻抗共性和差异问题,及时了解相关标准要求,在设计输入阶段及时识别,同时在设计验证阶段能正确实施测试验证,以便产品能够满足不同国家的技术要求。

大豆预处理车间刮板输送机断链保护器的应用

为及时监测大豆预处理车间刮板输送机在生产中出现的断链、脱链等故障问题,保障刮板输送机的设备安全,分析了刮板输送机断链、脱链的故障原因,并提出了将刮板断链保护器应用于刮板输送机中。刮板断链保护器由速度传感器与信号处理器组成,当刮板输送机出现断链、脱链故障时,速度传感器所传输的脉冲信号频率会下降,信号处理器通过检测脉冲信号频率快速有效地作出反应,快速停机并发出声光报警,保障设备和生产安全。断链保护器结构简单,安装方便,并且不影响刮板输送机的正常运行,适合应用于一些传统企业中。

马来亚华人族群对华民护卫司署的因应探析(1877-1934)

论文梳理了马来亚华民护卫司署的设立过程与主要职能,分析探讨了马来亚各阶层华人对设置华民护卫司署的不同态度。19世纪60年代起,英国对马来亚的殖民统治从间接治理转向直接治理,华人族群作为移入型群体却在诸多地方占据较大比例乃至第一大族群的事实,促使英国在马来亚设置治理华人族群的专门机构——华民护卫司署,规定凡涉及华人事务均归其负责。面对这一新设机构华人族群反应各异,以绅商阶层为代表的华人领导层通常配合华民护卫司署,并以多种形式表达对护卫司署的支持与感谢;大部分底层华人如妇女、劳工等,对华民护卫司署则经历从疑虑到认可的转变;少数个人利益受到冲击的华人,以及政治上不认同华民护卫司署的政治活动者等华人群体,抵制或激烈对抗华民护卫司署。华人社会在被纳入英国直接殖民治理体系时的复杂心态,反映了马来亚华人族群在地化进程的曲折与分歧。

慢性心力衰竭急性加重患者血清保护素D1的表达及其与预后的关系研究

目的:分析慢性心力衰竭急性加重患者血清保护素D1的表达情况,及其与患者预后的关系。方法:连续纳入我院2018年3月至2021年12月收治的476例慢性心力衰竭患者,并根据是否急性加重将患者分为非急性加重组(n=322)和急性加重组(n=154)。收集所有患者的临床资料,测量两组患者血清保护素D1的含量,并分析保护素D1的含量对慢性心力衰竭急性加重患者预后的评估作用。结果:与非急性加重组患者比较,急性加重组患者血清保护素D1的含量显著降低[(488.6±172.9)vs.(146.3±71.8)μg/L,P<0.05];保护素D1低表达组患者的年龄、NYHA分级、FBG、NT-proBNP、全因死亡和复合事件发生率,均显著高于保护素D1高表达组(P<0.05),而LVEF明显低于保护素D1高表达组(P<0.05);Kaplan-Meier分析显示,保护素D1低表达组患者全因死亡和复合终点事件的发生率明显高于保护素D1高表达组(P<0.05);Cox回归分析显示,血清保护素D1含量、NYHA分级、NT-proBNP和LVEF是慢性心力衰竭急性加重患者发生复合终点事件的危险因素(P<0.05);ROC曲线结果表明,血清保护素D1含量对慢性心力衰竭急性加重患者复合终点事件具有预测价值(曲线下面积为0.882,P<0.05)。结论:慢性心力衰竭急性加重患者血清保护素D1的含量显著降低,且保护素D1的含量与慢性心力衰竭急性加重患者的预后有关。