Reusable high performance of calcined Mg/Al hydrotalcite for the removal of Navy Blue and Yellow F3G dyes

Water pollution with dye chemicals from apparel industries is a serious problem in the world.Since most of dyes are potentially have toxic and carcinogenic effects on human,it is important to remove them before they are discharged to the environment.Among many methods available for dyes removal in water,adsorption is the easiest and economically feasible that has no major obstacle for practical applications.In the present study,we tested calcined Mg/Al hydrotalcite(Mg/Al CHT)prepared by coprecipitation technique as an adsorbent for the removal of Navy Blue(NB)and Yellow F3G(YF3G)dyes.Mg/Al CHT was characterized by using a Fourier transform infrared(FTIR)spectrometer,an X-ray diffractometer(XRD)and a scanning electron microscope(SEM).The results showed that Mg/Al CHT was highly effective as an adsorbent for the removal of NB and YF3G under mild-acidic condition(pH 4)with removal capacities(b)according to Langmuir isotherm model were 7.97×10^(–4) and 5.80×10^(–4)mol·g^(-1),respectively.Kinetics study showed that the adsorption of NB and YF3D on Mg/Al CHT followed pseudosecond order with rate constant(k_(p2))11.57×10^(3) and 11.75×103 g·mol^(-1)·min-1,respectively.The spent adsorbent can be easily regenerated by simply calcining it at 450℃ for 3 h.Adsorption test on the mixture of NB and YF3G showed that the adsorption capacity of Mg/Al CHT was eightfold higher than that of Mg/Al HT and the value was maintained with repeated use.

Building Warships and Nurturing Technical Talent at the Foochow Navy Yard during the Self-Strengthening Movement

In 1866, after the Opium Wars, the Chinese official Zuo Zongtang established the Foochow Navy Yard, which aimed to facilitate the independent construction of modern warships. French advisers, engineers, teachers, and craftsmen were hired, and a series of French schools for naval construction, drawing, and apprenticeship were set up. Previous studies have nearly exhausted the historical material on the Foochow Navy Yard, but few of them give an exact evaluation on its shipbuilding and educational levels. This paper traces the French sources on the shipbuilding technology and educational system at the Foochow Navy Yard and conducts a comparative study. With the guidance and assistance of foreigners, the Foochow Navy Yard gained the ability to assemble ships and imitate engines, while it remained necessary to import design drawings and structural components. The most outstanding students that the navy yard nurtured may have reached the level of école Polytechnique graduates, but the quality of students was hard to maintain. The backwardness of its conceptualization and the lack of financial and political support also contributed to its decline.

Predictive modelling for COVID-19 outbreak control:lessons from the navy cluster in Sri Lanka

In response to an outbreak of coronavirus disease 2019(COVID-19)within a cluster of Navy personnel in Sri Lanka commencing from 22nd April 2020,an aggressive outbreak management program was launched by the Epidemiology Unit of the Ministry of Health.To predict the possible number of cases within the susceptible population under four social distancing scenarios,the COVID-19 Hospital Impact Model for Epidemics(CHIME)was used.With increasing social distancing,the epidemiological curve flattened,and its peak shifted to the right.The observed or actually reported number of cases was above the projected number of cases at the onset;however,subsequently,it fell below all predicted trends.Predictive modelling is a useful tool for the control of outbreaks such as COVID-19 in a closed community.

A scenario construction and similarity measurement method for navy combat search and rescue

Navy combat search and rescue(NCSAR) is an important component of the modern maritime warfare and the scenario of NCSAR is the basis for decision makers to rely on. According to the core elements in the NCSAR process, the NCSAR scenario structure is constructed from seven perspectives based on the multi-view architecture framework. According to the NCSAR scenarios evolution over time, the NCSAR scenario sequence is analyzed and modeled based on the concept lattice method. Then,the incremental construction algorithm of the NCSAR scenario sequence lattice is given. On this basis, the similarity measurement index of NCSAR scenarios is defined, and the similarity measurement model of NCSAR scenarios is proposed. Finally, the rationality of the method is verified by an example analysis. The NCSAR scenario and similarity measurement method proposed can provide scientific guidance for rapid making, dynamic adjustment and implementation of the NCSAR program, and thus improve the efficiency and effectiveness of NCSAR.

Offshore Training in Navy Personnel Is Associated with Uninvestigated Dyspepsia

To investigate the known and new factors associated with uninvestigated dyspepsia （UD）, we surveyed 8600 Chinese navy personnel with offshore training shorter than 1 month or longer than 9 months per year. All respondents were required to complete a questionnaire covering demographics, the Chinese version of the Rome Ⅲ survey, eating habits, life styles, and medical and family history. The response rate was 94.3% （8106/8600） with 4899 respondents qualified for analysis, including 1046 with offshore training and 3853 with onshore training. The prevalence of UD was higher in the offshore group than in the onshore group （12.6% vs. 6.9%, P〈0.001）, with a general prevalence of 8.1%. The subjects with offshore training were more likely to suffer from UD and postprandial distress syndrome （OR= 1.955 95% CI 1.568-2.439, P〈0.001 and OR=1.789, 95% CI 1.403-2.303, P〈0.001, respectively）. The mul- tivariate logistic regression analysis showed UD was associated with offshore training （OR=1.580, 95% CI 1.179-2.118, P=-0.002）, family history （OR=1.765, 95% CI 1.186-2.626, P=0.005） and smoking （OR=1.270, 95% CI 1.084-1.488, P=0.003）, but not with alcohol drinking. The association between dysentery history and UD was undetermined/borderline （P=0.056-0.069）. In conclusion, we identified offshore training as a new factor associated with UD, and also confirmed 2 known associated factors, family history and smoking.

The Effect of Partially Substituted Lupin, Soybean, and Navy Bean Flours on Wheat Bread Quality

Many edible legumes contain high amounts of proteins, fibers, minerals and vitamins. Their essential amino acid composition and concentration complements the amino acids in wheat and other cereals. In addition, breads fortified with protein rich legumes make the breads more palatable. In this study, we evaluated breads made from wheat flour partially substituted with soybean, navy bean, and lupin flours at 10%, 20%, and 30% levels. The physicochemical properties of breads were measured and compared with the control (made from 100% wheat flour). Statistical analysis was used to assess the significance of the differences. The breads fortified with soybean, lupin and navy bean flours showed remarkable springiness, similar to the breads made from wheat flour. However, the higher amount of substitution increased the firmness of the breads, probably due to the incorporation of additional fibers and proteins into the formulations. Compared to wheat bread, the volumes of 90:10 wheat-soybean, wheat-lupin, and wheat-navy bean breads decreased about 7%, 2%, and 10%, respectively. Higher substitution levels would result in a higher reduction in volume for all legumes tested. The volume reduction as a result of legume substitution appears to be navy bean flour > soybean flour > lupin flour. The inclusion of legumes in the bread formulations imparts a slightly darker crust color and crumb color with the exception of breads with the soybean flour substitution. Lupin appears to be the best substitution candidate among the legumes tested for fortified bread making. Lupin can be presented as a high-value protein source in developing marketable foods for health conscious consumers.

The Russian Navy is Adrift in the Syrian Doldrums

Modemization of the Russian navy started at the beginning of this decade has improved its posture but is incomplete and negatively affected by the demanding tasks related to supporting the intervention in Syria. The newly-approved naval policy sets ambitious guidelines for expanding the whole range of naval capabilities, but the yet to be approved 2027 State Armament program is set to leave these aspirations underfunded. It is possible to address the needs created by the operations in the Eastern Mediterranean, but such allocation of resources would clash with other priorities, particularly with upgrading the fleet of strategic submarines. The political demands for performing a wide range of tasks clash with the inability to set realistic targets for shipbuilding, and this bad leadership turns the Russian navy to the course of degradation. This high-risk prospect involves a range of implications for US and North Atlantic Treaty Organization （NATO） security and naval policies.

Analysis of Design Approach for Navy Weapon System Operation Environment

This study is a preparation phase for visualization of utilized information using ergonomic user interface and standardization of elements for anti-air weapon system. Therefore, we investigated the instances of Navy Weapon System operation environment for defense advanced country. Based on the collected data, we compared and analyzed the weapon system operation environment design. Ultimately, it is essential to share a variety of battle field conditions such as enemy threat, enemy/friendly information, terrain information that can be effectively recognized. In this paper, we conduct case study for ergonomically development of Operation Environment. It is expected that this research improves the situational awareness and reduces the operator’s task load.

基于Navie Bayes算法与k-means聚类算法的财务数据库异常检测

为了有效消除用户异常行为对企业财务数据库所带来的安全隐患,以往的数据库异常检测技术(如Navie Bayes算法)通常采用查询反馈,并建立用户行为特征(用户行为轮廓)的方法查找安全隐患,而该方法构建训练集耗时较多,效果不显著。因此,提出一种基于Navie Bayes算法与k-means聚类算法相结合的财务数据库异常检测技术。通过调取财务数据库运行日志中的用户查询内容及相应结果,采用k-means聚类算法进行用户分组,采用Navie Bayes算法构建异常检测模型。应用测试结果表明,与传统的用户行为轮廓算法相比,所提算法的训练效率更高,准确率大幅提高,综合F_(1)值有所提升,提高了财务数据的安全性。

Chinese Navy’s Structure and Organization

In time of peace, the navy adopts a leadership system that combines operational command with building and administration, and which mainly consists of the navy headquarters, fleets, test bases, educational institutions and an armaments academy. The navy has three fleets, namely, the Beihai Fleet, Donghai Fleet and Nanhai Fleet,

British Navy Rescues Man Adrift in Caribbean

高速游艇在海上发生了故障,Lenny Leon Peter便在海上漂泊了 26日,终于被英国 HMS Grafton号护卫舰发现,而九死一生。文章中两次出现了spot一词,而不是用see,discover等动词,值得体味。因为spot的确切含义是:todetect or discern,especially visually/辨认或认出,特别指用眼睛看出。有趣的是,文中出现了lookout一词,其确切含义,你可要当心哟。

Treating traumatic brain injury at sea:how to improve the skills and capabilities of the naval medical personnel

Dear Editor,Recent advances in military technology have led to the development of sophisticated and intelligent weapons, which increase mortality and morbidity. Since the advent of highexplosion weapons, "shock wave" has surpassed "shrapnel" and become the most important injurious component in conventional combat. Traumatic brain injury(TBI) is a leading cause of disability and death among military personnel and civilians during wartime[1]. Clinically, its symptoms and indications vary depending on the location and severity of the injury. The most frequently observed symptoms included altered consciousness and local dysfunction.

HIS系统财务数据库异常检测技术及应用

当前,医院信息系统(HIS)已成为医院信息化建设的重要内容,但HIS与财务数据库的接入仍然采用传统的方式,导致财务重要数据存在一定的安全隐患。为了有效消除用户异常行为对医院财务数据库所构成的安全隐患,设计一种财务数据库异常检测技术。通过调取财务数据库运行日志中的用户查询内容及相应结果,采用k-means聚类算法进行用户分组,采用Navie Bayes算法构建异常检测模型。应用测试结果表明,与传统的用户行为轮廓算法相比,所提出的算法准确率提高了7.06个百分点,综合F1值提高了3.33个百分点,此外,在大幅度缩减计算量的基础上模型训练时间缩短了81%,极大地提高了财务数据的安全性。

Develop Naval Cadets'Global Competence through"Belt and Road"Ini⁃tiative Cooperation and Exchanges

Since the 18th National Congress of Chinese Communist Party,the great call for building a maritime power and a power⁃ful military force has set higher standards for Navy’s development and the application of strategies.As a maritime military force,the navy bears considerable responsibilities of safeguarding territorial sovereignty,maritime rights and interests with security and development as core mission,and defending the role and image of China as a major county in the world.This paper analyzes and studies naval officers’global competence development from three aspects,and discusses the significance and recommendations of strengthening the development of naval cadets’global competence in cooperation and exchange guided by“Belt and Road”Initia⁃tive(BRI).

The measure and decision of technical risk in the development of naval vessels

The risks in development of navy vessels were explored, The resources of technical risk in the design and development of vessels were mentioned, It was pointed that technical risk dominated the other risk components. Based on the writers＇ understanding and experience from risk analysis and risk ,nanagement to the development of a navy vessel, four measure indexes of technical risk were presented. The decision criteria and the rules corresponding to the indexes were estahlished by the statistic information,

Inspiration of the functional localization of a US naval hospital ship on a Chinese hospital ship

Through the experience of being stationed on the USS Mercy hospital ship(T-AH19) and a preliminary comprehension of the personnel and material arrangements,processing and functional formats,and the multi-platform contributions of US Navy hospital ships,we briefly introduce the characteristics of US hospital ships regarding medical support,emergency rescue exercises,communications and training,international humanitarian aid,etc.We discuss the function and responsibility of Chinese hospital ships,focusing on the investigation of the construction mode and positioning in the navy.

A review of the physiological and psychological health and wellbeing of naval service personnel and the modalities used for monitoring

Naval cohorts rely heavily on personnel to ensure the efficient running of naval organisations. As such, the wellbeing of personnel is essential. In an occupational setting, naval service personnel experience a variety of physiological and psychological stressors. Most naval services arrange annual physical fitness and body composition tests to ensure the physical readiness of personnel. However, these tests only evaluate a small amount of physiological capabilities. Components such as aerobic and strength capabilities are assessed, however, other components of physical fitness such as speed, agility, anaerobic capacity and flexibility are not. In addition to the physical capabilities, personnel are impacted by fatigue, nutrition and psychological stressors such as copping in stressful situations or dealing with time away from family and friends. This review will discuss the physiological and psychological factors that affect personnel's wellbeing. In addition to this, it will also evaluate the methods that are used to assess both physiological and psychological wellbeing.

Efficacy of Trifluralin Compared to Ethalfluralin Applied Alone and Co-Applied with Halosulfuron for Weed Management in White Bean

There are a limited number of herbicides registered for weed management in white bean production in Ontario, Canada. Five field experiments were completed in Ontario from 2016 to 2018 to compare the efficacy of trifluralin and ethalfluralin applied alone and in combination with halosulfuron, applied preplant incorporated (PPI), for weed control efficacy and white bean tolerance and seed yield. At 2 and 4 WAE, there was no white bean injury from the herbicide treatments evaluated. Trifluralin applied PPI provided up to 32%, 99%, 13%, 99%, 27%, 99% and 99% control of velvetleaf, redroot pigweed, common ragweed, common lambsquarters, wild mustard, barnyardgrass and green foxtail, respectively. Trifluralin and ethalfluralin provide similar control of velvetleaf, redroot pigweed, barnyardgrass and green foxtail control, however, ethalfluralin is slightly more efficacious on common ragweed, common lambsquarters and wild mustard. Halosulfuron (35 g∙ai∙ha−1), applied PPI, provided as much as 76%, 98%, 96%, 96%, 100%, 19% and 23% control of velvetleaf, redroot pigweed, common ragweed, common lambsquarters, wild mustard, barnyardgrass and green foxtail, respectively. Trifluralin (600 or 1155 g∙ai∙ha−1) + halosulfuron (35 g∙ai∙ha−1), applied PPI, provided up to 88%, 100%, 98%, 100%, 100%, 99% and 98% control of velvetleaf, redroot pigweed, common ragweed, common lambsquarters, wild mustard, barnyardgrass and green foxtail, respectively. Ethalfluralin (810 or 1080 ai∙ha−1) + halosulfuron (35 g∙ai∙ha−1) provided similar control. Weed interference decreased white bean seed yield 44% - 45% with trifluralin, 30% - 41% with ethalfluralin and 34% with halosulfuron. However, decreased weed interference with trifluralin and ethalfluralin applied in combination with halosulfuron resulted white bean seed yield that was similar to the weed-free control. Trifluralin or ethalfluralin co-applied with halosulfuron can be safely used in white bean production for the control of common annual grass and broadleaf weeds in Ontario.

1783~1793年英国海军舰船和人员领域的策略探析

1783年《凡尔赛和约》的签订,标志着英第一帝国的正式解体①。此后,英国社会各界开始对第一帝国解体的教训进行深刻反思,并思考英国未来的命运。尽管未能保全在北美的优势,但战线的延伸和海疆的急遽膨胀,仍促使英国人将目光投向更为遥远的大洋深处,英军舰船的任务也不再是拱卫本土、海峡和北海海域,对于海疆的认知和管控模式也相应地发生变化。