High Efficient Removal of Trace Molybdenum from Water by FeCl_3:Effects of p H and Affecting Factors in the Presence of Co-existing Background Constituents

The effect of FeCl_3 coagulation-filtration on the removal of trace Mo(Ⅵ) from water is investigated in the p H range of 4. 00 to 9. 00 and the effects of sulfate,silicate,phosphate and humic acid( HA) on the process were determined. Overall,the removal of Mo(Ⅵ) is determined by two factors: the content of Fe intercepted from water( Intercepted Fe) and the affinity between Mo(Ⅵ)( or co-existing background constituents) and adsorption sites. At low p H,where the agglomeration of the iron flocs is limited,the former factor is dominant,so the methods that can promote the agglomeration of the iron flocs,such as increasing the p H,adding co-existing constituents( sulfate,phosphate or HA),can increase the removal of Mo(Ⅵ). While at high p H,the second factor dominated. Increasing the p H weakens the affinity between Mo(Ⅵ) and the iron flocs,and co-existing background constituents( sulfate,phosphate,silicate or HA) compete with Mo(Ⅵ) for adsorption sites,both effects result in a decrease in Mo(Ⅵ) removal. The Mo(Ⅵ) removal efficiency of FeCl_3 in natural water decreases as the p H increases from 4. 00 to 9. 00,and it is better to operate the coagulation process at p H 5.00 in the practical water treatment engineering.

Adaptive genetic diversity of dominant species contributes to species co-existence and community assembly

The synthesis of evolutionary biology and community ecology aims to understand how genetic variation within one species can shape community properties and how the ecological properties of a community can drive the evolution of a species.A rarely explored aspect is whether the interaction of genetic variation and community properties depends on the species'ecological role.Here we investigated the interactions among environmental factors,species diversity,and the within-species genetic diversity of species with different ecological roles.Using high-throughput DNA sequencing,we genotyped a canopydominant tree species,Parashorea chinensis,and an understory-abundant species,Pittosporopsis kerrii,from fifteen plots in Xishuangbanna tropical seasonal rainforest and estimated their adaptive,neutral and total genetic diversity;we also surveyed species diversity and assayed key soil nutrients.Structural equation modelling revealed that soil nitrogen availability created an opposing effect in species diversity and adaptive genetic diversity of the canopy-dominant Pa.chinensis.The increased adaptive genetic diversity of Pa.chinensis led to greater species diversity by promoting co-existence.Increased species diversity reduced the adaptive genetic diversity of the dominant understory species,Pi.kerrii,which was promoted by the adaptive genetic diversity of the canopy-dominant Pa.chinensis.However,such relationships were absent when neutral genetic diversity or total genetic diversity were used in the model.Our results demonstrated the important ecological interaction between adaptive genetic diversity and species diversity,but the pattern of the interaction depends on the identity of the species.Our results highlight the significant ecological role of dominant species in competitive interactions and regulation of community structure.

Optical and Network Performance Analysis of XGS-PON System over Active Co-Existence PON Systems

We proposed an enhanced Reach Extender (RE) called Active Co-existence (ACEX) and investigate its performance with respect to XGS-PON system that co-exist with GPON and TWDM-PON system. The RE is consists of hybrid optical amplifier integrated (EDFA and SOA) with Co-existence Element (CEX) module which is installed at the Central Office (CO) together with the OLT system and act as a booster and pre-amplifier for the downstream and upstream optical signal respectively. The results show that the proposed ACEX is capable to support XGS-PON operation for a maximum distance of 35 km with 128 splitting ratio and up to 44 dB link loss.

The Predatory Function of Three Spiders to Two Insect Pests in Rice Within a Multi-species Co-existence System

The prey-seeking behavior of three spiders (X1-Pirata subpiraticus, X2-Clubiona japonicola and X3-Tetragnatha japonica) for brown plant hopper (X4-Nilaparvata lugens) and rice spittle bug (X5-Cal-litettix versicolor) was investigated, as well as how interference between and within species occurred, by using a quadratic regression rotational composite design. Six predation models derived from the analysis of interactions among and within predators and preys were developed. The total predatory capacity of spiders on rice insect pests after coexistence for one day can be expressed as follows: Y3 = 32.795 + 2.25X1 + 1.083X2 + 0.5X3 + 10.167X4 + 3.167X5 - 1.67X12 - 2.42X22 - 3.295X32 - 0.045X42 + 0.455X52 - 3.125X1X2 + 0.375X1X3 -0.625X1X4 - 0.375X1X5 + 0.375X2X3 - 0.875X2X4 + 0.125X2X5 + 0.375X3X4 - 0.375X3X5 + 0.125X4X5. The principal efficiency analysis using this model indicated that increases in insect pest density significantly increased predation by predators; this was much greater than the effect of any single predator. X4 had a greater effect than X5; however, X4 and X5 demonstrated little interspecific interference and even promoted each other and increased predation rates as the densities of the two pests increased. Among the three predators, an increase in the density of X, had the greatest effect on the increase in predation, X3 had the second, X2 the third greatest effect. As predator density increased inter- and intra-species interference occurred, which were largely related to the size, activity, niche breadth, niche overlap and searching efficiency of the predators. X2 produced the greatest interference between different individuals and between any other predator species. X3 had the second greatest, which reduced predation levels at high predator densities. Because of these factors, the highest predation rate was obtained at a prey density of 120 per 4 rice-hills. The optimal proportion of the three predators in the multi-predator prey system was X1: X2: X3 = 5.6:1.3:4.1.

Surgical strategy in case with co-existence of malignant oligodendroglioma and arteriovenous malformation: A case report

A brain tumor associated with an arteriovenous malformation (AVM) is very rare. A 42-year-old female presented with two separate lesions in her right frontal lobe on MRI. An angiogram diagnosed one of the lesions as an AVM. The second lesion appeared to be a tumor. Tumor removal was difficult due to bleeding from the nearby AVM, necessitating removal of the AVM and allowing complete excision of the tumor. Histopathological analysis revealed the tumor was an anaplastic oligodendroglioma. There was no recurrence of the tumor 5 year after completion of therapy. We discuss the operative strategy in case of synchronous diseases and provide a review of the literature.

Kanzanise Empimba za Nzima Atarikimanya Akangaya: The Story of Play-beans in Promoting Peaceful Co-existence

Afrikan narratives such as folktales,proverbs and taboos were clear systems and structures on which societies operated.These were used to guide society’s values that promoted trust,accountability,self respect and many more for the wellbeing of the entire community.This paper discussesone of the Banyankole folktale Kanzanise empimba za Nzima atarikimanya akangaya(Let me stand in the gap of my sister(Nzima)while she is away or else,I will be shamed in case she knows I did not).The purpose of the paper is to demonstrate how Afrikan indigenous knowledge and specifically this folktale Kanzanise empimba za Nzima atarikimanya akangaya inculcated in the community a spirit of care,commitment to one another and transparency which are fundamental values that create peaceful societies.The paper argues that there is a wealth of wisdom residing in the African cultures to be exploited to guide African policy development.This will raise African indigenous knowledge to a platform worth recognition for its contribution towards positive transformation.Furthermore,that the Western systems and structures currently guiding Afrikan policy development are oblivious of the richness of Afrikan indigenous knowledge that united the people.The paper concludes that for Afrikans to contribute to the global agenda,they need to bring to the table of globalization a unique product such as the Afrikan indigenous narratives that contribues to world peace.The paper recommends moving back into our past,identify and promote those unique Afrikan values that sustained Africa before the Western influence.

Cultural Co-existence

THE premiere of popular Chinese TV soapie Beijing Love Storywas widely hailed as a major cultural breakthrough in the Nigerian capital of Abuja on September 18. Dubbed into Hausa. one of Nigeria＇s major languages, the drama formed part of the Experience China program held by China＇s State Council Information Office （SCIO） in Abuja from September 10 to 19.

Self-healing effect based on electrolyte/dielectric co-existence characteristic of sol-gel-derived aluminum oxide thin film

Dielectric capacitors are receiving increasing attention due to the high-power density and fast charge-discharge speed.However,defects are inevitably induced during the preparation process and then weaken the breakdown strength,thereby limiting their energy density.The phenomenon gives rise to self-healing technology.The discovery of sol-gel-derived aluminum oxide with electrolysis and dielectric dual-characteristic provides a novel,simple and cost-effective self-healing method to heal defects and enhance energy density.In this paper,we systematically reviewed the current self-healing technologies and the important progress of electrolysis and dielectric co-existence dielectrics.Finally,we outlook the electrolysis and dielectric co-existence dielectrics and potential challenge.

Responding of zooplankton to environmental factor changes in the Changjiang River estuarine regions in spring-summer from 2016 to 2020

The estuarine areas are under frequent influence from freshwater intrusion and ocean currents,in which zooplankton species are diversified and variable as they are sensitive to physio-chemical variations in water.Therefore,understanding the relationships between zooplankton and environmental factors help us know the water quality.To achieve co-existence with species in similar ecological group or habit,they could inevitably alter themselves to fit the ecology and adjust the function according to the competitive exclusion in ecological theory.However,information of the co-existence of dominant species in the Changjiang(Yangtze)River estuary(CRE)and adjacent waters remains scarce.We explored the relationships between dominant zooplankton and environmental factors in the study region in spring-summer from 2016 to 2020,involving particularly the composition of dominant species,ecological groups,their relationships with environmental factors,and co-existence of important species,using the non-multidimensional scale analysis(nMDS)method and redundancy analysis.Results show that Labidocera euchaeta and Tortanus vermiculus were dominant species in the study scope.The turnover rate of dominant zooplankton was greater(>50%)in spring while the species number was higher in summer.The dominant species were estuarine,offshore,and eurytopic based on the adaptation to salinity.In spring,the ecological groups were dominated by estuarine species,while in summer by estuarine and offshore species.In addition,the nMDS showed that the dominant species in the same ecological group were more dispersed and not prominently clustered;the dominant species were staggered among different ecological groups.The temperature,salinity,pH,dissolved oxygen,and chlorophyll a were the main environmental factors on the distribution of the dominant species in spring,while in summer were dissolved oxygen,temperature,salinity,and pH.The domination of medusae of Nemopsis bachei and Pleurobrachia globosa in zooplankton community in spring,and the continuous decrease in abundance of L.euchaeta reflected the effects of local climate change.The temperature and salinity changes in different years and the subsequent response of zooplankton reflected the influence of freshwater intrusion and/or ocean currents.Zooplankton in similar ecological habits exhibited the competitive exclusion in terms of co-existence.

基于语谱图的管制员疲劳状态检测研究

现阶段利用陆空通话语音对管制员疲劳状态的研究中,大多只考虑了语音在时域或频域的变化,而忽视了疲劳会同时在时域与频域上产生影响。将三种疲劳状态下的陆空通话语音分别转化为可同时反映时域与频域特性的语音频谱图像,利用灰度共生矩阵提取四维典型的特征参数,对比管制员在不同状态下特征参数的变化情况,构建管制员疲劳检测模型并对输入特征进行检测。结果表明:利用语谱图特征结合传统特征作为输入特征的检测准确率最高,达到95.49%,较单一使用传统特征的检测准确率高出4%;管制员疲劳状态的变化会直观地反映在语谱图上,会对其特征值产生影响,利用这种影响对管制员疲劳状态进行检测,可以得到良好的检测结果。

“共在性”数字诠释学理论构建

“共在性”数字诠释学,致力于解决数字化生存造成的理解的碎片性、多元性和不平等性,在高速变化的数字时代重构多元共生的存在方式。在数字技术与诠释学的新一轮融合中,“共在性”数字诠释学主张将数字技术作为新的诠释主体,探讨人的数字化存在。“共在性”数字诠释学融合施莱尔马赫以来的“共在性”诠释学思想、共同体思想以及中华优秀传统文化中的“共在”思想为其理论基础,以阐明数字世界中人自身的技术性共在、人与人多元共生的社会性共在、人类文化的艺术性共在以及人的伦理性共在的新样态为基本阐释维度,从而助力数字中国“五位一体”建设。

白念珠菌气道定植对铜绿假单胞菌所致呼吸机相关性肺炎的影响

目的探讨白念珠菌气道定植对多重耐药铜绿假单胞菌所致呼吸机相关性肺炎(ventilator-associated pneumonia,VAP)患者病死率、抗菌药物疗程、免疫状态及炎症状态的影响。方法本前瞻性多中心队列研究以2018年6月至2023年6月收治于6所三级甲等综合教学医院重症医学科的多重耐药铜绿假单胞菌所致VAP患者为研究对象。根据患者呼吸道是否存在白念珠菌定植分为定植组及非定植组。比较两组患者30 d全因死亡率、抗菌药物敏感性及疗程、诊断VAP后第1、3、5、7天免疫指标及炎症指标变化。结果5年研究期间共纳入多重耐药铜绿假单胞菌导致VAP患者232例,其中白念珠菌定植组105例,非定植组127例。非定植组患者检出的铜绿假单胞菌对于氨基糖苷类、头孢菌素类及碳青霉烯类抗菌药物的敏感性均高于定植组(P<0.05),但两组患者对于16种抗菌药物的敏感性均低于中国细菌耐药监测网(China antimicrobial surveillance network,CHINET)2022年水平(P<0.05)。研究发现非定植组患者白介素-17A、(1,3)-β-D葡聚糖在各时间节点均低于定植组,且其他炎性指标更容易恢复至正常范围(P<0.05),同时非定植组患者的T及Th淋巴细胞绝对值可以在第7天更快地恢复至正常水平(P<0.05)。两组患者30 d全因死亡率差异无统计学意义(25.7%vs 22.8%,P=0.61),但非定植组抗菌药物的疗程明显短于定植组[(11.3±3.1)d vs(14.2±4.7)d,P<0.01],且存在重症医学科住院时间缩短的趋势。结论气道白念珠菌定植不影响多重耐药铜绿假单胞菌所致VAP患者的30 d全因死亡率,但会延长炎症反应及抗菌药物使用时间并导致免疫功能延迟恢复。

畜禽粪便好氧堆肥雌激素降解调控研究进展

收集并分析了近年来与畜禽粪便及其堆肥相关的成果,总结了雌激素的理化特性及其在畜禽粪便中的赋存情况,阐述了堆肥工艺参数、不同添加剂以及共存污染物对畜禽粪便堆肥过程中雌激素降解的影响及作用机制.在畜禽粪便中威胁较大的雌激素主要为雌三醇、雌二醇和雌酮.堆肥工艺中保持不低于8d的高温持续时间更有利于雌激素的降解.添加剂中接种微生物菌剂对雌激素的降解效果最佳.重金属、微塑料和抗生素等共存污染物对雌激素的降解更多表现为抑制作用.然而畜禽粪便堆肥中雌激素的降解研究还需不断深入.鉴于此,在已有研究基础上对未来研究和重点关注的方向进行展望.

基于Beers标准(2019版)评价河北省多种慢性病共存老年心力衰竭住院患者的潜在不适当用药

目的基于Beers标准(2019版)对河北地区多种慢性病共存老年心力衰竭(简称心衰)住院患者的潜在不适当用药(PIM)进行调查,并结合各疾病专科诊疗指南进行深入分析,探讨其相关危险因素,为促进多种慢性病共存老年人群临床合理用药提供参考。方法2022年1月随机从河北省4家医疗机构信息系统中各抽取50例老年心衰住院患者的电子病历资料。根据纳入与排除标准,最终纳入135例符合标准的患者。基于Beers标准(2019版)对老年心衰住院患者的PIM情况进行评估,结合疾病诊疗指南深入用药分析评价,给出用药建议。采用多因素Logistic回归分析老年心衰住院患者发生PIM的影响因素。结果不同年龄、罹患疾病种类的老年心衰住院患者PIM发生率比较,差异均无统计学意义(P>0.05);不同性别、用药种类、肾小球滤过率(GFR)的老年心衰住院患者PIM发生率比较,差异均有统计学意义(P<0.05)。按PIM发生频率高低排序前3位依次为利尿剂、螺内酯、苯二氮[艹卓]类镇静催眠药物。38例患者存在53例次PIM,排名前3的药物分别为苯二氮[艹卓]类镇静催眠药物、地高辛和抗精神病药物。24例患者存在26例次PIM,其中慢性肾脏病4期或以上阶段患者使用非甾体抗炎药物、心衰患者使用非甾体抗炎药物、晕厥患者使用胆碱酯酶抑制剂的情况较多。86例患者存在117例次高风险用药,其中老年住院患者使用利尿剂情况最多;其次为≥75岁的患者使用新型口服抗凝药物利伐沙班及达比加群。21例患者存在22例次药物相互作用,其中老年住院患者联合使用肾素-血管紧张素系统抑制剂和保钾利尿剂情况最多,共出现12例次。22例肾功能不全患者存在25例次PIM情况,其中肌酐清除率<30 mL/min的老年住院患者使用螺内酯的情况最多,共出现14例次。多因素Logistic回归分析结果显示,回归方程的拟合度为83.2%,其中女性、用药种类≥20种、GFR<45 mL/(min·1.73 m^(2))是发生PIM的危险因素(P<0.05)。结论河北地区多种慢性病共存老年心衰住院患者的PIM发生率较高,女性、用药种类≥20种、GFR<45 mL/(min·1.73 m^(2))是发生PIM的危险因素,合理用药水平有待提高。

双胎之一完全性葡萄胎妊娠并发侵蚀性葡萄胎1例

目的探讨双胎之一完全性葡萄胎妊娠的发病机制、临床特点及诊疗方法。方法回顾性分析1例双胎之一完全性葡萄胎妊娠并发侵蚀性葡萄胎病例的诊疗经过及妊娠结局,并复习相关文献。结果孕妇促排卵治疗后自然妊娠,孕期超声考虑双胎妊娠合并葡萄胎,经剖宫产获得足月新生儿。结合其临床表现、影像学检查、组织病理学特征及免疫组化,最终确诊为双胎之一完全性葡萄胎。剖宫产后随访2个月,产妇确诊为侵蚀性葡萄胎(Ⅲ:2),给予MTX单药化疗7个疗程后临床痊愈。结论双胎妊娠合并葡萄胎的处理,应综合考虑,对于双胎之一完全性葡萄胎并发侵蚀性葡萄胎更应制定个体化的诊疗方案。

学校家庭教育指导促进家校共生共育研究

学校家庭教育指导是学校教育与家庭教育实现共同进步、协同共育的有效途径。基于教育生态学中共生理论,审视学校开展家庭教育指导促进家校共生共育的实践,发现其目前存在着共生单元联动不足、共生模式演化受阻、共生环境支持乏力等实践困境。学校开展家庭教育指导促进家校共生共育,理应强化家校共生理念,发挥学校主导作用,促进共生单元联动;完善指导服务体系,畅通能量传导渠道,推动共生模式演进;健全指导制度建设,营造家校共生文化,形成正向共生环境。

习近平总书记关于人与自然和谐共生重要论述的内在逻辑与实践指向

习近平总书记关于人与自然和谐共生重要论述的基本特征是以问题为导向,在理论沿袭、实践论证与创新发展中,其形成过程涵盖了三个大的生成环节,即以实践经验为本的生态认知、以保护自然为先的生态策略和以构建生命共同体为主的生态治理。在这三个环节中,“辩证统一”的方法论、“自然优先”的价值论、“和谐发展”的实践论构成了该重要论述从观念到行动、理论到实践、局部到整体的发展逻辑体系。以习近平总书记关于人与自然和谐共生重要论述为引领推动新时代生态文明建设,关键是要树立和谐共生的生态理念,以理念引导行动;构建生态现代化制度,以制度推进改革;制定系统的生态发展战略,以战略规划未来。

Arsenic(V)removal from groundwater by GE-HL nanofiltration membrane:effects of arsenic concentration,pH,and co-existing ions

A laboratory-scale investigation was performed to study arsenic(As(V))removal by negatively charged GE-HL nanofiltration(NF)membrane in simulated drinking water.Effects of As(V)concentration(0–200μg·L–1),pH,and co-ions and counter-ions were investigated.The NF membrane presented good stability,and the rejection rates exceeded 90%.The rejection rates of As(V)decreased with the increase of As(V)concentration,while it increased with the increase of pH(reached 96%at pH 6.75).Moreover,a negative relationship was observed between the co-existing ions of Cl^(–),Na^(+),SO_(4)^(2–),and Ca^(2+)and the removal of As(V),in which bivalent ions presented more significant effects than monovalent ions.