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Assessment of radioactivity levels in some cement produced locally in Iraq

Radiation Detection Technology and Methods 2021年第4期5卷 633-640页

作者： Maitham S.Amana Najwa J.Jubier Mohammed J.R.Aldhuhaibat A.A.Salim Department of Physics College of ScienceUniversity of WasitKutWasitIraq Laser Center&Physics Department Faculty of ScienceUniversiti Teknologi MalaysiaJohor bahruJohorMalaysia

Purpose Due to the rapid expansion of the construction industries,cement production is ever-increasing worldwide and maintaining the qualities of the local cement became vital for safe and durable *** this regard,the radiometric assessment of cement plays a significant *** The specific activities of the naturally occurring radionuclides present in ten Portland cement samples that can cause possible health hazards were determined using a gamma-ray spectrometer equipped with(3×3)inch NaI(Tl)detector with 1024 *** and conclusion The measured activity concentrations of Ra-226,Th-232,and K-40 were found in the range of 12.38–55.75(average of 31.29 Bq/kg),6.29–57.54(average of 15.97 Bq/kg),and 112.63–266.37(average of 168.24 Bq/kg),*** recorded average activity concentration of these radionuclides in the cement was below the stipulated world standard by UNSCEAR(Sources and Effects of Ionizing Radiation,United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report to the General Assembly,with Scientific Annexes,vol.I,2000).The obtained mean activity concentration of Raeq in the cement(67.101 Bq/kg)was much lower than the recommended guideline of 370 Bq/*** addition,the mean value of the calculated absorbed dose rate(59.947 nGy·h^(−1)),annual effective dose(0.220 mSv·y^(−1)),activity concentration index(0.240),alpha index(0.156),excess lifetime cancer risk(0.771×10^(−3))external(0.084)and internal(0.300)hazard index of the studied samples were much below the recommended safety *** is affirmed that the cement sold in the local market can safely be used for building constructions.

关键词： Cement Concentration Absorbed dose Alpha index health hazards

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A study of commonly occurring fungal diseases on stored tomatoes of Kathmandu Valley

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Studies in Fungi 2021年第1期6卷 159-167页

作者： Shakya B Aryal HP Natural History Museum Tribhuvan UniversitySwayambhuKathmanduNepal Central Department of Botany Tribhuvan UniversityKirtipurNepal

Fungal pathogens destruct the quality and quantity of tomato production and cause health hazards to the consumers as well as economic loss to the *** study was carried out to identify some fungal diseases associated with post-harvest deterioration of stored tomato fruits in three vegetable markets of Lagankhel,Balkhu and Kalimati of Kathmandu *** samples were collected from selected sites in three separate trials and cultured in Potato Dextrose *** investigation,16 species belonging to 15 genera of fungi were *** were Alternaria alternata,***,Aspergillus niger,Botrytis cinerea,Cladosporium fulvum,Colletotrichum truncatum,Curvularia tetramera,Fusarium oxysporum,Geotrichum candidum,Mucor mucedo,Penicillium notatum,Phytophthora infestans,Phoma exigua,Pullularia pullulans,Pythium aphanidermatum and Rhizopus *** were responsible for 15 different diseases of Alternaria fruit rot,Anthracnose,Black mold rot,Botrytis Bunch Rot,Damping off/fruit rot,Drechslera mold,Fusarium rot,Mucor rot,Penicillium rot,Phoma blight,Phytophthora rot,Rhizopus rot,Russet,Scab and Sour *** presence of these fungi and corresponding rot diseases on stored tomato indicate the need for management of fungi,farm sanitation and improved market in order to prevent field-to-storage transmission of pathogens.

关键词： Consumers health hazards Pathogens Post-harvest diseases Traders

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Potential health Impact of Microplastics:A Review of Environmental Distribution,Human Exposure,and Toxic Effects

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Environment & health 2023年第4期1卷 249-257页

作者： Yue Li Le Tao Qiong Wang Fengbang Wang Gang Li Maoyong Song State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Environmental Nanotechnology and health Effects Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Microplastics are ubiquitous in the global *** a typical emerging pollutant,its potential health hazards have been widely *** this brief paper,we introduce the source,identification,toxicity,and health hazard of microplastics in the *** literature review shows that microplastics are frequently detected in environmental and human *** are potentially exposed to microplastics through oral intake,inhalation,and skin *** summarize the toxic effects of microplastics in experimental models like cells,organoids,and *** effects consist of oxidative stress,DNA damage,organ dysfunction,metabolic disorder,immune response,neurotoxicity,as well as reproductive and developmental *** addition,the epidemiological evidence suggests that a variety of chronic diseases may be related to microplastics ***,we put forward the gaps in toxicity research of microplastics and their future development *** review will be helpful to the understanding of the exposure risk and potential health hazards of microplastics.

关键词： microplastics emerging pollutant exposure pathway toxicity health hazards

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Determination of Dangerous Region of the Electromagnetic Pollution Caused by the Electric Fields around Power Line

Determination of Dangerous Region of the Electromagnetic Pol...

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1998 International Conference on Communication Technology

作者： Gao Yougang Yu Lifang Beijing Univ.of Posts ＆ Telecom.

ISBN: (纸本)7800908275

＜正＞This works gives the general formula for calculating the electric fields around a 3-Φsymmetrical power transmission line when the heights of its conductors are different from each other:It gives also the method for calculating the electric fields around single phase ＆ 3-Φasymmetrical *** minimum permissible separation distance between the power line ＆ resident has been given.

关键词： power overhead lines electric fields transmission line theory safety health hazards personnel dangerous region electromagnetic pollution power line electric fields symmetrical power transmission line conductor heights single phase lines 3-/spl Phi/ asymmetrical lines 3-phase asymmetrical lines minimum permissible separation distance resident maintenance personnel safety

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Measuring Traffic Induced Air Pollution in Onne Port’s Environment

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Open Journal of Air Pollution 2021年第4期10卷 63-75页

作者： Donatus Eberechukwu Onwuegbuchunam Famous Egelu Moses Olatunde Aponjolosun Kenneth Okechukwu Okeke Department of Maritime Management Technology Federal University of Technology Owerri Imo State Nigeria Department of Maritime Transport & Logistics Nigerian Maritime University Okerenkeko Warri Delta State

Maritime shipping has been a major facilitator of economic prosperity throughout the world and it is likely to grow to meet continued and growing transport needs in both developed and developing countries. However, global emissions from maritime shipping have increased considerably, causing depletion of the ozone layer and most importantly posing threat to lives and coastal environment through air pollution. This study investigated the constituents of ambient air in Onne port’s environment in Rivers State of Nigeria. Six air pollutants (O3 CO, NO2, PM2.5, PM10, and SO2) were critically monitored with hand-held mobile Aeroqual gas monitors, series 500, at strategic locations within the port’s environment and Eleme Junction (the control). We found that mean concentrations (μg·m3) of the following pollutants: O3 (71.776 ± 0.726), CO, (19.145 ± 0.275) NO2 (28.145 ± 0.965) and SO2 (36.913 ± 0.378) were significantly high. The particulates (PM10, PM2.5) also showed higher mean concentrations of 48.400 ± 0.197 and 29.676 ± 0.352 respectively. The observed values were found to be significantly higher than those observed in the control group and also exceeded the safe permissible limits for gaseou

关键词： Air Pollution in Ports Greenhouse Gases health hazards Ozone Layer Particulate Matter

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Dietary incorporation of jojoba extract eliminates oxidative damage in livers of rats fed fumonisin-contaminated diet

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Hepatoma Research 2016年第1期2卷 78-86页

作者： Mosaad A.Abdel-Wahhab Olivier Joubert Aziza A.El-Nekeety Hafiza A.Sharaf Ferial M.Abu-Salem Bertrand H.Rihn Food Toxicology and Contaminants Department National Research CenterDokkiCairo 12311Egypt Faculty of Pharmacy EA 3452 CITHEFORLorraine University54001 Nancy CedexFrance Department of Pathology National Research CenterDokkiCairo 12311Egypt Department of Food Science and Technology National Research CenterDokkiCairo 12311Egypt

Aim:This study aimed to determine the composition of ethanol extract of jojoba seeds,and to evaluate its hepatoprotective effects in rats fed fumonisin B1(FB1)-contaminated ***:Jojoba seeds were extracted in 95%ethanol,and the chemical composition was *** rats were divided into six groups and treated for 8 weeks as follows:(1)Untreated control;(2)FB1-contaminated diet(80 mg/kg diet);(3)low dose(0.5 mg/kg b.w.)jojoba extract;(4)high dose(1.0 mg/kg b.w.)jojoba extract;(5)low dose jojoba extract plus FB1;and(6)high dose jojoba extract plus *** and liver samples were collected for different biochemical analyses and histological ***:The results indicated that the ethanolic extract of jojoba is rich in protein,phenolic compounds,phytic acid,and considerable amounts of *** fed FB1-contaminated diet showed severe biochemical and histological changes typical to those reported in *** with jojoba seed extract alone at the two tested doses did not induce significant alterations in all parameters *** treatment of jojoba seed extract with FB1 eliminated hepatotoxicity induced by FB1,especially at low dose of jojoba seed ***:The authors concluded that jojoba seed extract can be incorporated in FB1-contaminated feed to eliminate FB1-induced hepatotoxicity.

关键词： Fumonisin B1 health hazards jojoba seed liver mycotoxins oxidative stress

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Does Chitosan Extend the Shelf Life of Fruits?

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Advances in Bioscience and Biotechnology 2016年第8期7卷 337-342页

作者： Tahsin Islam Sakif Adam Dobriansky Kelly Russell Tofazzal Islam Canadian International School Bangladesh (CISB) Dhaka Bangladesh Department of Biotechnology Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

The use of hazardous formalin in increasing shelf life of fruits and protecting them from microbial decay by unscrupulous traders is a big health concern for the consumers in Bangladesh. Chitosan is a natural biopolymer produced from the exoskeletons of shrimp and crab, which slows antimicrobial activities and induces immunity of plants against microbial pests. This study aimed to evaluate the efficacy of chitosan on the shelf life extension of some local ripened fruits compared to untreated control. Three doses of chitosan solution viz. 0, 500 and 1000 ppm were sprayed in alternate day on banana (cvs. Shabri and Champa), strawberry, tomato, and oranges. It revealed that chitosan extended shelf life of all fruits by delaying the decay;however, level of protection varied in different kinds of fruits as well as in doses of the chitosan used. Among the tested fruits, decay of tomatoes was most delayed by chitosan. Spraying of both 500 and 1000 ppm of chitosan equally protected 100% decay in tomatoes until 8 days of treatments at room temperature. More than 80% protection of other fruits viz. banana, orange and strawberries by chitosan were recorded at 8, 8 and 4 day after treatment, respectively, which were remarkably higher than the untreated control. Interestingly, 500 ppm of chitosan spray gave better protection than 1000 ppm in all the tested fruits. These results suggest that lower doses of chitosan can be utilized as a natural preservative of fruits alternative to hazardous formalin. A further study with higher number of fruits, and at varying temperature and chitosan doses are needed for recommending it for practical application as a fruit preservative.

关键词： Fruit Shelf Life Alternative to Formalin health hazards Use of Chitosan Fruit Preservation

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The effect of passive smoking on non-smoking women’s health

The effect of passive smoking on non-smoking women’s health

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2011 World Congress on Engineering and Technology(CET 2011)

作者： Baohua Yu Institute of Economy Huazhong University of Science and Technology Wuhan Hubei P.R.China Baohua Yu Xinhua Zhang Yanqiu Jing College of Tobacco Science Henan Agricultural University Zhengzhou Henan P.R.China Guangliang Li Jinfeng Zhu Science and Technology Department Luohe Tobacco Company Luohe Henan P.R.China Jianjun Liu Functional Department Zhengzhou Tobacco Company Zhengzhou Henan P.R.China Lei Jin Functional Department Jiyuan Tobacco Company Jiyuan Henan P.R.China Huaiqi Li Technology Department Henan Tobacco Industry Co.Ltd Zhengzhou Henan P.R.China

To investigate the situation of of non-smoking women’s passive smoking,health condition and their consciousness,prospective study was carried out in seven districts of Zhengzhou and 1000 non-smoking women aged 14 to 90 years old participated in *** results implied the passive smoking rate was 82.6%,who were mainly married and beyond 30 years old,97.8%of them knew the injurants in fog and 98.5% thought it harmful to their health.80.9%thought smoker was more susceptible to lung cancer and 65.4%to asthma.92% women disagreed on smoking and took measures to avoid passive smoking *** is more,the group with the dose of passive smoking more than 18（hours×years）significantly increased the risk of chronic bronchitis compared with the group below 18（OR=2.128,95%CI:1.077-4.206）.There was no difference in the incidence of other diseases between the passive smoking group and no passive smoking group,such as asthma, chronic hepatitis,cancer and self-thought health ***, we obtained the conclusions that passive smoking rate was high in Zhengzhou,but women’s understanding level about the hazards was also very *** the influence of passive smoking on women health need more deep study.

关键词： Passive smoking Non-smoking women health hazards Cross-sectional study

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Occupational exposure to flour dust among bakery workers:prevalence,potential hazards and promising interventions

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Toxicology Advances 2023年第4期5卷 33-44页

作者： Seyi-Samson Enitan Osareniro-Eguagie Osakue Esther-Ngozi Adejumo Temitope-Oyewole Olusanya Emmanuel-Olusegun Ileoma Comfort-Bosede Enitan Nwachi-Idume Ogbonna Department of Medical Laboratory Science Babcock University Ilishan-RemoOgun state 121103Nigeria Department of Chemical Pathology Babcock University Teaching HospitalIlishan-RemoOgun state 121103Nigeria Department of Education Medical Laboratory Science Council of NigeriaFCT-Abuja 900110Nigeria

Occupational exposure to flour dust within bakery environments presents significant health hazards to bakery *** dust,generated as a byproduct during baking,becomes airborne during the baking process,thus constituting a respiratory *** health consequences include respiratory diseases,skin irritation,allergic reactions,and potential long-term health *** indicates that a broad segment of bakery workers encounters exposure to flour dust,with specific subgroups,such as bakers and dough mixers,being particularly *** factors to this exposure encompass insufficient ventilation and a lack of *** is vital to assess exposure levels through air quality monitoring and health *** interventions encompass engineering solutions(e.g.,ventilation systems,dust extraction),administrative measures(including training and the use of personal protective equipment),and the implementation of occupational health and safety *** efforts with healthcare professionals and regulatory authorities are paramount for achieving *** studies underscore the effectiveness of such interventions,resulting in improved worker health,thus underscoring the advantages of protective *** in this endeavor include industry resistance to change,financial considerations,and issues related to *** recommendations entail further research,policy enhancements,and the involvement of industry stakeholders and labor unions in advocating for worker safety.

关键词： flour dust bakery workers occupational exposure interventions health hazards

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