Between Science and Conscience

Guardians of the industrial galaxy:the transformative impact of humanoid robots Humanoid robots have become a familiar sight,particularly in science fiction films where they are often depicted as omnipotent beings.They are capable of caring for our families in real time,offering emotional companionship and even protecting Earth on our behalf.

Study on the Relationship Between the Ploidy Level of Microspore-Derived Plants and the Number of Chloroplast in Stomatal Guard Cells in Brassica oleracea

The relationship between the ploidy level of microspore-derived plants and chloroplast number in stomatal guard cells was studied in cabbage, broccoli, and Chinese kale. In the experiment, distribution statistics analysis and t-test were used to perform statistical analysis on chloroplast number of different ploidy level in those stomatal guard cells mentioned above, and morphology identifying and chromosome counting were used to test accuracy of counting chloroplast number in stomatal guard cells. The chloroplast average number in stomatal guard cells was very similar among the different leaf positions on the same plant and among significantly among the different ploidy the different locations in the same stoma in the same variety. All the leaf, while the chloroplast number varied distributions of the chloroplast number in different ploidy stoma were normal distribution fitted. A correlation has been established between ploidy and chloroplast number in the stomatal guard cells. In every single stoma of microspore-derived plants, the chloroplast number for a haploid should not be more than 10, diploids 11 to 15, and polyploids more than 15. The accuracy of this method for identification of different ploidy plants was 93.93%. Furthermore, the accuracy of this method was reliable and did not vary with the plants growth conditions. Therefore, the chromosome ploidy of plants derived from microspore culture in cabbage, broccoli, and Chinese kale can be identified by simply counting the chloroplast number in stomatal guard cells.

Study of the influence of virtual guard ring width on the performance of SPAD detectors in 180 nm standard CMOS technology

The influence of the virtual guard ring width(GRW)on the performance of the p-well/deep n-well single-photon avalanche diode(SPAD)in a 180 nm standard CMOS process was investigated.TCAD simulation demonstrates that the electric field strength and current density in the guard ring are obviously enhanced when GRW is decreased to 1μm.It is experimentally found that,compared with an SPAD with GRW=2μm,the dark count rate(DCR)and afterpulsing probability(AP)of the SPAD with GRW=1μm is significantly increased by 2.7 times and twofold,respectively,meanwhile,its photon detection probability(PDP)is saturated and hard to be promoted at over 2 V excess bias voltage.Although the fill factor(FF)can be enlarged by reducing GRW,the dark noise of devices is negatively affected due to the enhanced trap-assisted tunneling(TAT)effect in the 1μm guard ring region.By comparison,the SPAD with GRW=2μm can achieve a better trade-off between the FF and noise performance.Our study provides a design guideline for guard rings to realize a low-noise SPAD for large-array applications.

“Moisture Guardian”加湿器设计

设计说明:加湿器“Moisture Guardian”采用智能化控制系统,用户可以通过手机应用远程控制加湿器,随时随地调整湿度和风速,根据个人喜好创建定制化的舒适环境,同时,加湿器内置传感器能够实时监测环境湿度,自动调节工作模式,确保室内空气始终清新湿润。

用Java的Guarded Suspension模式解决哲学家进餐问题

“哲学家进餐问题”是一个典型的同步问题.本文简要介绍了Java语言的多线程技术和Guarded Suspension模式,利用该技术解决了这个问题,并给出了完整的实现代码.

基于Guarded Suspension模式的JAVA多线程技术应用

本文简要介绍了Java语言的多线程技术和GuardedSuspension(被监视的挂起)同步处理模式,并利用该技术解决了一个传统的同步问题——哲学家进餐问题,并给出了程序实现的关键代码。

Effects of Exterior Abscisic Acid on Calcium Distribution of Mesophyll Cells and Calcium Concentration of Guard Cells in Maize Seedlings

In this study, the direct effects of exterior abscisic acid （ABA） on both calcium distribution of mesophyll cells and cytosolic calcium concentration of guard cells were examined. The distribution of Ca^2＋ localization were observed with calcium antimonate precipitate-electromicroscopic-cyto-chemical methods after treated with ABA and pretreated with ethylene glycol-bis-（2-aminoethylether）-N,N,N＇,N＇-tetraacetic acid （EGTA）, verapamil （Vp）, and trifluoperazine （TFP）. The laser scanning confocal microscopy was used to measure the cytosolic calcium concentrations of guard cells under different treatments. The results showed that the cytosolic Ca^2＋ concentration of mesophyll ceils was induced to increase by ABA, but to decrease in both outside cell and the vacuoles within 10 rain after treatments. The cytosolic calcium concentration of guard cells was increased gradually with the lag in treatment time. However, both EGTA and TFP could inverse those effects, indicating that the increase of cytosolic calcium induced by exterior ABA was mainly caused by calcium influx. The results also showed that calmodulin could influence both the calcium distribution of mesophyll cells and calcium concentration of guard cells. It shows that calmodulin participates in the process of ABA signal transduction, but the mechanism is not known as yet. The changes both calcium distribution of mesophyll cells and calcium concentration of guard cells further proved that the variations of cytosolic Ca^2＋ concentration induced by ABA were involved in the stomatal movements of maize seedlings.

Occupation, Physical Fitness and Adiposity Markers among Security Guards and Students of Delhi University

Physical fitness and health are reciprocal to each other and examining adiposity is an important parameter to assess physical fitness. The present study examines the relationship between different adiposity markers and physical fitness based on occupation. A cross sectional sample of 82 security guards (mean age: 36.86 ± 8.72) and 43 students (mean age: 23.4 ± 3.86) of Delhi University were studied. Anthropometric measurements (height, body weight, waist and hip circumference) and socio-demographic characteristics were ascertained. Body composition parameters (body fat percentage, fat mass, fat free mass, muscle mass, total body water, bone mass and visceral fat) were assessed by bioelectric-impedance method using Tanita Body Composition Analyzer (BCA). Harvard step test was performed to test the physical fitness using Rapid Fitness Index. Student’s t test was used to compare the physical fitness and adiposity markers between the security guards and the students. ANOVA was used to categorize the level of physical fitness with adiposity markers amongst the two groups. As RFI scores decreased, mean value of body weight, waist circumference, hip circumference, MUAC, fat mass, visceral fat and BMI increased among the security guards showing a trend which indicates that with an increase in adiposity, the tendency to perform physical work decreases. However, no consistent trend as such was observed amongst the students between the RFI categories. Nevertheless, Delhi University students were found to be more physically fit than the security guards that may be attributable to the differences in their leisure time physical activity preferences and occupational workloads besides the underlying genetic, metabolic or dietary influences. Workplace interventions to reduce occupational sitting among the university security guards may boost cardiorespiratory fitness in the long run.

Life Cycle Assessment of CCA-Treated Wood Highway Guard Rail Posts in the US with Comparisons to Galvanized Steel Guard Rail Posts

A cradle-to-grave life cycle assessment is done to identify the environmental impacts of chromated copper arsenate (CCA)-treated timber used for highway guard rail posts, to understand the processes that contribute to the total impacts, and to determine how the impacts compare to the primary alternative product, galvanized steel posts. Guard rail posts are the supporting structures for highway guard rails. Transportation engineers, as well as public and regulatory interests, have increasing need to understand the environmental implications of guard rail post selection, in addition to factors such as costs and service performance. This study uses a life cycle inventory (LCI) to catalogue the input and output data from guard rail post manufacture, service life, and disposition, and a life cycle impact assessment (LCIA) to assess anthropogenic and net greenhouse gas (GHG), acidification, smog, ecotoxicity, and eutrophication potentially resulting from life cycle air emissions. Other indicators of interest also are tracked, such as fossil fuel and water use. Comparisons of guard rail post products are made at a functional unit of one post per year of service. This life cycle assessment (LCA) finds that the manufacture, use, and disposition of CCA-treated wood guard rails offers lower fossil fuel use and lower anthropogenic and net GHG emissions, acidification, smog potential, and ecotoxicity environmental impacts than impact indicator values for galvanized steel posts. Water use and eutrophication impact indicator values for CCA-treated guard rail posts are greater than impact indicator values for galvanized steel guard rail posts.

High-Performance Structure of Guard Ring in Avalanche Diode for Single Photon Detection

Avalanche photon diode and avalanche diode array, working in Geiger mode, have single photon detection capability. The structure of guard ring is the key factor to avoid the premature edge breakdown of the avalanche diode and increase the maximum bias voltage. A new structure of the guard ring is proposed in this letter, in which the floating guard ring is put outside the p-well guard ring. Simulation results indicate that the maximum bias voltage of the proposed guard ring is higher than that of the state-of-the-art methods.

Guard Catalyst for Removing Carbonyl Iron/Carbonyl Nickel during Methanol Synthesis Developed by SINOPEC Nanjing Chemical Research Institute Has as HPassed Appraisal

On December 28,2020 the project on R&D of guard catalyst for removing carbonyl iron/carbonyl nickel undertaken by the SINOPEC Nanjing Chemical Research Institute(NCRI)has passed the research achievements appraisal organized by the Sinopec Science and Technology Division.The experts attending the appraisal meeting have suggested speeding up the commercial application tests as soon as possible.

Performance Assessment for LTE-Advanced Networks with Uniform Fractional Guard Channel over Soft Frequency Reuse Scheme

Dropping probability of handoff calls and blocking probability of new calls are two important Quality of Service (QoS) measures for LTE-Advanced networks. Applying QoS for Cell edge users in soft frequency reuse scheme in LTE system is a challenge as they already suffer from limited resources. Assigning some resources for handover calls may enhance dropping probability but this is in price of degradation in the blocking probability for new calls in cell-edge. Uniform Fractional Guard Channel (UFGC) is a call admission policy that provides QoS without reserving resources for handover calls. In this paper, the performance of Soft Frequency Reuse (SFR) in presence of Uniform Fractional Guard Channel (UFGC) will be investigated using queuing analysis. The mathematical model and performance metrics will be deduced in this assessment. The impact of UFGC will be evaluated in edge and core part separately. Then the optimal value for the parameter of UFGC will be obtained to minimize the blocking probability of new calls with the constraint on the upper bound on the dropping probability of handoff calls.

Hercules公司Strong Guard产品系列新增区域驱动轮胎

美国《现代轮胎经销商》(www.moderntiredealer.com)2019年10月14日报道如下。Hercules轮胎橡胶公司已经扩大了其Strong Guard卡车轮胎系列产品,增加了StrongGuard HDO区域驱动轮胎,如图1所示。该轮胎具有独特的胎面和胎侧设计,抗刮擦防护适于易刮擦路况,肩部花纹块特殊角度的花纹沟有助于推开胎面底部的石块。根据Hercules公司官方声明,它还具有如下特点。

Hercules的Strong Guard产品线增加拖车轮胎

美国《现代轮胎经销商》(www.moderntiredealer.com)2018年10月9日报道:Hercules轮胎橡胶公司的新Strong Guard HTL拖车轮胎(见图1)享有7年有限担保,包括胎面使用寿命前半期因工艺和材料问题免费更换轮胎。

Gen Z Cultural Inheritors Guard Tradition In Modern Ways

"The arts should never be rigid inform,whether on stage or social media."Prior to an Olympic welcoming banquet on February 5 at the Great Hall of the People in Beijing,hosted by Chinese President Xi Jinping and his wife Peng Liyuan,Prince of Monaco AlbertⅡtried his hand at dough sculpting.The volunteer helping His Serene Highness knead the doe-eyed Bing Dwen Dwen,roly-poly mascot of the Beijing 2022 Winter Olympics,was 26-year-old Lang Jiaziyu,a third-generation inheritor of Dough Figurines Lang(Mian Ren Lang in Chinese),a National Intangible Cultural Heritage item since 2008.

Guardian of the Refinery for Safe and Stable Operation

Li Xiaobo has won several honorary titles,such as Model Worker of Dalian Petrochemical Company,Outstanding Youth in Dalian,Model Worker of Dalian,Model Worker of CNPC,and Model Worker of Central Enterprises.He always wears a simple and sincere smile and is so ordinary that you can barely recognise him at first sight in the crowd.As a team leader who mainly engages in plugging of leaks under pressure,he has been devoted to his job for many years and made outstanding contributions to safe and stable operation and production of Dalian Petrochemical Company.

Assess the Level of Occupational Stress and to Evaluate the Effectiveness of Planned Teaching Programme on Knowledge Regarding Occupational Stress and Its Management among Security Guards of a Selected Organization, Shimoga, Karnataka

Background and aim: Occupational stress occurs when there is a disequilibrium between job demands and capabilities. Being employed as a security guard exposes the subject to potentially dangerous situations. Security guards are engaged in a profession that confronts violators of the law as well as violence and thus are more likely to be exposed to traumatic experiences. So it is very important to assess the level of stress they possess and make them aware of the harmful effects and how to manage it. Hence, there is a need to assess the level of occupational stress and to evaluate the effectiveness of PTP on knowledge regarding occupational stress and its management among security guards of a selected organization, Shimoga, Karnataka. Results: Demonstrated that the majority of the security guards were having a moderate level of occupational stress. Among 80 security guards, 59 (74%) were having a moderate level of occupational stress, 21 (26%) were having a severe level of occupational stress and none of them possessed a mild level of occupational stress. Conclusion: This study contributes to the emerging body of knowledge about occupational stress in their security profession and it is important to plan the healthy coping strategies to cope up with their occupational stress.

Zhang Yongzhong:Guardian of the Automobile Engine

IN an engine tuning facility at Chongqing Changan Automobile Co.,Ltd.,Zhang Yongzhong takes his apprentices through an exercise to spot check a batch of engines.With his years of experience,he notices an imperceptible misfire in one of the engines that signals a problem.“Wait!The sound of this engine is different from the others!”says Zhang,showing why he’s such an invaluable employee.

Oracle Data Guard与GoldenGate技术分析对比

随着财务系统数据库的使用时间增长,数据库中的数据量也会增加,数据量越大也意味着数据库备份与恢复所需要的成本就越高,不仅是备份所需时间越来越长,恢复数据所需时间也随之增长;当数据库发生意外而导致数据库中的数据不可修复的时候,容灾远比备份更能快速有效的恢复生产业务的数据;在实际的使用过程中,我们也可以把容灾当做是一个活动的备份来使用,主要介绍了Oracle Data Guard和GoldenGate。

Shenyang Jiadun Electronic Guard System with world advanced technologies

The Shenyang Jiadun Electronic Co. Ltd specializes in the manufacture of security alarm systems. Using world-advanced technologies including two nationally patented,