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Turning teawaste particles into magnetic bio-sorbents particles for arsenic removal from wastewater:Isotherm and kinetic studies

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Particuology 2024年第4期87卷 179-193页

作者： mary McGeogh Hamza Annath Chirangano Mangwandi School of Chemistry and Chemical Engineering Queen's University BelfastDavid Kier BuildingBT95AGUnited Kingdorm Department of Chermnistry Lancaster UniversityBailrigsLancasterLA14YBUnited Kingdom

The primary objective of this research was to assess the potential of magnetic bleached biochar(MBBC)as a cost-effective adsorbent for arsenic *** achieve this,locally collected tea wastes underwent meticulous cleaning,bleaching,and modifications via thermal and chemical *** non-magnetic and magnetic biochar adsorbents were thoroughly characterized using Fourier transform-infrared spectroscopy(FT-IR)and thermo-gravimetric analysis(TGA).Subsequently,the adsorptive performance of MBBC in removing arsenic from wastewater samples was investigated,considering various crucial parameters such as adsorbent-adsorbate contact time,concentration of As,temperature,adsorbent dosage,and the regeneration-ability of the *** experimental data for the adsorption process were best represented by the Langmuir isotherm,indicating its suitability for the MBBC ***,the MBBC demonstrated a maximum Langmuir adsorption capacity of approximately 714 mg/g at room temperature,highlighting its efficiency as an arsenic ***,the Lagergren's Pseudo-second order kinetic model proved to be the most suitable for describing the adsorption kinetics,confirming the chemisorption nature of the *** results also indicated that the adsorption process is endothermic and feasible,suggesting its viability for practical *** all findings into account,the comprehensive analysis strongly supports the potential use of MBBC as a highly promising and cost-effective adsorbent for efficiently removing arsenic from aqueous *** research contributes valuable insights to the field of wastewater treatment and offers a sustainable and environmentally friendly solution for tackling arsenic contamination in water sources.

关键词： Arsenics Wastewater Adsorption Magnetic bio-char Teawaste

A toast to a zebrafish germ cell induction cocktail

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Science China(Life Sciences) 2024年第6期67卷 1314-1315页

作者： mary C.Mullins Department of Cell and Developmental Biology University of Pennsylvania Perelman School of MedicinePhiladelphia 19104USA

The zebrafish field is ringing in the new year with a publication from Yonghua Sun's laboratory(Wang et al.,2023)of a cocktail of germline factors that can induce all cells of the zebrafish embryo into primordial germ cells(PGCs)at phenomenal *** major advance is not only of great interest to germ cell biologists,but it has important applications to the entire zebrafish field,as shown in Wang et al.(2023).

关键词： fish zebra field

成年Wistar雄性大鼠右下第一磨牙形貌及硬度的研究

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成年Wistar雄性大鼠右下第一磨牙形貌及硬度的研究

Thermoregulation,incubator humidity,and skincare practices in appropriate for gestational age ultra-low birth weight infants:need for more evidence

2019年中华口腔医学会老年口腔医学专业委员会第十四次全国老年口腔医学学术年会

作者：梁雪 mary P walker 福建省口腔医学高校重点实验室福建医科大学附属口腔医院牙体牙髓科 Dental School of University of Missouri-Kansas City

目的:Wistar大鼠作为口腔医学研究常用的建模用实验动物,其第一磨牙的形貌参数及机械性能研究数据尚缺乏系统性研究。本研究旨在对Wistar大鼠右下第一磨牙形貌及机械性能进行研究,为之后的动物实验提供基线参照。方法:选取20只健康成年W... 详细信息

目的:Wistar大鼠作为口腔医学研究常用的建模用实验动物,其第一磨牙的形貌参数及机械性能研究数据尚缺乏系统性研究。本研究旨在对Wistar大鼠右下第一磨牙形貌及机械性能进行研究,为之后的动物实验提供基线参照。方法:选取20只健康成年Wistar雄性大鼠(68天)处死后剥离右下颌骨第一磨牙,对牙体的高度、近远中最大宽度、颊舌向最大宽度进行测量。使用vickers显微硬度仪,对深层釉质(距离釉质牙本质交界30μm)及浅层牙本质(距离釉质牙本质交界30μm)进行硬度测试,施加力为100gf,施力时间为12秒及8秒,每个区域测试十个点取平均值。结果:68天龄Wistar大鼠右下第一磨牙高度为1.56±0.10(mm),近远中最大宽度2.85±0.09(mm),颊舌最大宽度1.34±0.07(mm)。深层釉质显微硬度值为234.46±24.34(mm),浅层牙本质显微硬度值为58.45±6.31(mm)。

关键词： Wistar大鼠第一磨牙形貌参数硬度值

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World Journal of Pediatrics 2024年第7期20卷 643-652页

作者： Umesh Mishra Deanne August Karen walker Pranav R.Jani Mark Tracy Faculty of Medicine and Health University of SydneySydneyAustralia Department of Neonatology Westmead HospitalWestmeadNSWAustralia Grantley Stable Neonatal Unit Royal Brisbane and Women’s HospitalBrisbaneAustralia School of Nursing Midwifery and Social WorkUniversity of QueenslandBrisbaneAustralia Department of Newborn Care Royal Prince Alfred HospitalCamperdownAustralia

Background Although not universal,active care is being offered to infants weighing<500 g at birth,referred to as ultra-low birth weight(ULBW)infants appropriate for gestational *** infants have the greatest risk of dying or developing major *** infants face challenges related to fluid and heat loss as well as skin injury in the initial days of life from extreme anatomical and physiological immaturity of the *** there is an emerging literature on the outcomes of ULBW infants,there is a paucity of evidence to inform practice guidelines for delivering optimal care to this cohort of *** sources A comprehensive review of the literature was performed using the PubMed and Embase *** keywords included“thermoregulation or body temperature regulation”,“incubator humidity”,“skin care”,“infant,extremely low birth weight”and“ultra-low birth weight infants”.Results Evidences for thermoregulation,incubator humidity,and skincare practices are available for preterm infants weighing<1500 g at birth but not specifically for ULBW *** on thermoregulation,incubator humidity,or skincare practices had a small sample size and did not include a sub-group analysis for ULBW *** practice recommendations in ULBW infants are adopted from research in very and/or extremely low birth weight *** This narrative review focuses on challenges in thermoregulation,incubator humidity,and skincare practices in ULBW infants,highlights current research gaps and suggests potential developments for informing practices for improving health outcomes in ULBW infants.

关键词： Incubator humidity Neonatal intensive care unit Skincare Thermoregulation Ultra-low birth weight

Geothermo-mechanical alterations due to heat energy extraction in enhanced geothermal systems: Overview and prospective directions

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Deep Underground Science and Engineering 2024年第3期3卷 256-268页

作者： mary C.Ngoma Oladoyin Kolawole Olufemi Olorode John A.Reif Jr.Department of Civil and Environmental EngineeringNew Jersey Institute of TechnologyNewarkUSA Department of Petroleum Engineering Louisiana State UniversityBaton RougeUSA

Geothermal energy from deep underground (or geological) formations,with or without its combination with carbon capture and storage (CCS),can be a key technology to mitigate anthropogenic greenhouse gas emissions and meet the 2050 net‐zero carbon emission *** resources in low‐permeability and medium‐and high‐temperature reservoirs in sedimentary sequence require hydraulic stimulation for enhanced geothermal systems (EGS).However,fluid migration for geothermal energy in EGS or with potential CO_(2) storage in a CO_(2)‐EGS are both dependent on the in situ flow pathway network created by induced fluid *** thermo‐mechanical interactions can be complex and induce varying alterations in the mechanical response when the working fluid is water (in EGS) or supercritical CO_(2)(in CO_(2)‐EGS),which could impact the geothermal energy recovery from geological ***,there is a need for a deeper understanding of the heat extraction process in EGS and CO_(2)‐*** study presents a systematic review of the effects of changes in mechanical properties and behavior of deep underground rocks on the induced flow pathway and heat recovery in EGS reservoirs with or without CO_(2) storage in CO_(2) ‐***,we proposed waterless‐stimulated EGS as an alternative approach to improve heat energy extraction in ***,based on the results of our literature review and proposed ideas,we recommend promising areas of investigation that may provide more insights into understanding geothermo‐mechanics to further stimulate new research studies and accelerate the development of geothermal energy as a viable clean energy technology.

关键词： CO_(2)-EGS enhanced geothermal systems geomechanics geothermal energy underground thermal energy

Directives and references in selected coronavirus-motivated internet memes

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Language and Semiotic Studies 2024年第2期10卷 245-266页

作者： Ayo Osisanwo Toluwalope mary Falade Department of English University of IbadanIbadanNigeria Institute of English Studies Leuphana UniversitätLüneburgGermany Department of English and General Studies Ladoke Akintola UniversityOgbomosoNigeria

The use of directives in communicating the nature of the pandemic and reference to social experiences were promoted using images on social media *** images or memes are used to create awareness and reinforce the criteria for safety during the *** studies on internet memes have concentrated on humor generation,speaker-hearer shared knowledge,neologism,and multimodality among others,with insufficient attention paid to the use of directives and references in such coronavirus-motivated *** paper,therefore,examines how directives and references are employed in conveying expected social responsibilities through coronavirus-motivated internet memes in Nigeria and other socio-cultural *** data,one hundred coronavirus-motivated memes were purposively selected from Facebook,and eight representative memes were subjected to pragmatic analysis using aspects of Jacob Mey’s(***:An introduction,2nd ***:Blackwell Publishing)pragmatic acts theory to unearth insights from *** paper observes that the various spheres of life that are relatable to an online audience help to express what the pandemic is about and enhance the meaning of the pandemic with the context of the use of the memes,giving clearer perspectives on the *** and references are useful tools for conveying social responsibilities to online audience.

关键词： directives references coronavirus internet memes social responsibilities

Rodent management in Aotearoa New Zealand: approaches and challenges to landscape-scale control

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Integrative Zoology 2024年第1期19卷 8-26页

作者： John G.INNES Grant NORBURY Araceli SAMANIEGO Susan walker Deborah J.WILSON Manaaki Whenua-Landcare Research HamiltonNew Zealand Manaaki Whenua-Landcare Research AlexandraNew Zealand Manaaki Whenua-Landcare Research AucklandNew Zealand Manaaki Whenua-Landcare Research DunedinNew Zealand

Aotearoa—New Zealand has only four rodent species,all *** order of arrival,they are Pacific rat Rattus exulans,brown rat ***,house mouse Mus musculus,and black rat *** management in New Zealand aims mainly to conserve indigenous biodiversity rather than to protect crops or manage diseases,as is usual *** describe four major“regimes”and one major vision for rodent control in New Zealand to meet ecological restoration *** challenges for island eradications are for large islands that are remote or populated by *** 1080 is the only large-scale(tens of thousands of hectares)option for black rat control,but its application requires adjustment to counter subsequent rapid black rat ***“ecosanctuaries”(mean 720 ha)use ground-based traps and poisons to target mainly black rats and face constant *** with mammal-resistant fences(up to 3500 ha)limit reinvasion and target more pest species and have enabled the return of previously extirpated taxa to the main *** Free 2050 aims to eradicate the rat species(but not mice)plus some other introduced mammals from New Zealand by *** vision is not attainable with current tools,but research and experimental management is exploring techniques and *** large scale(to 100000 ha)at which black rats are now targeted for control to extremely low abundance seems to be unique to New Zealand.

关键词： black rat brown rat eradication house mouse rodent control

Open to Chinese Democracy

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China Today 2024年第3期73卷 46-48页

作者： ROBERT walker Beijing Normal University

The National People’s Congress meets every year for about a week in *** there is much more to China’s *** 2,977 elected deputies will be attending the second plenary meeting of the 14th National People’s Congress at the Great Hall of the People in Beijing in early ***,the world’s largest legislative body,is the most striking manifestation of China’s governance system,whole-process people’s *** outsiders,the gathering seems symbolic and ***,the deliberation undertaken by the unpaid deputies in the week that they are together is merely the most visible element in a complex consultative system of government.

关键词： gathering striking system

Resisting Economic Coercion

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China Today 2024年第6期73卷 20-23页

作者： ROBERT walker Green Templeton College University of Oxford The Jingshi Academy at Beijing Normal University The Royal Society of Arts The Academy of Social Sciences

PROFESSOR Alena Douhan is a Special Rapporteur for the United Nations and a human rights *** visited China in May as part of her mandate to investigate the humanitarian consequences of the unilateral coercive measures imposed on China.“Unilateral coercive measures”are what other people tend to call sanctions-or trade embargoes or punitive *** her visit,Professor Douhan met government officials,representatives of the legislative and judicial branches,members of the diplomatic community and academia,and stakeholders from business and non-governmental organisations.

关键词： consequences imposed measures