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Nanoemulsified Mentha piperita and Eucalyptus globulus oils exhibit enhanced repellent activities against Anopheles stephensi

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Asian Pacific Journal of Tropical Medicine 2019年第11期12卷 520-527页

作者： rahman mohammadi Mehdi Khoobdel Maryam Negahban Solmaz Khani Health Research Center Life Style InstituteBaqiyatallah University of Medical SciencesTehranIran Iranian Research Institute of plant protection TehranIran Faculty of Agriculture Department of Plant ProtectionUniversity of TabrizTabrizIran

Objective:To formulate nanoemulsion from essential oils of Mentha(M.)piperita *** Eucalyptus(E.)globulus *** to compare their repellant activity with normal essential oils and N,N-diethyl-m toluamide(DEET)as a standard chemical ***:In this study,protection time of essential oils and DEET was evaluated on four human subjects using test cage,and their values were determined against Anopheles ***,ED50 values for the above essential oils were determined using the ASTM E951-94 *** compositions of essential oils were determined using GC-MS,and droplet size and zeta potential of the nanoemulsion were measured with dynamic light ***:The results(expressed as mean±SD)showed that protection time of *** 50%,*** Nano 50%,*** 50%,*** Nano 50%,and DEET 25%was(2.89±0.45)h,(4.17±0.28)h,(0.96±0.27)h,(5.51±0.02)h,and(6.10±0.47)h,***50 values were 29.10(95%CI:23.36-36.06)μg/cm^2 for Mentha,19.39(15.35-23.99)μg/cm^2 for Mentha Nano,36.10(28.70-48.01)μg/cm^2 for Eucalyptus,18.50(14.65-23.23)μg/cm^2 for Eucalyptus Nano,and 3.62(2.68-4.55)μg/cm^2 for DEET,*** Nano and *** Nano provided significantly longer protection than normal essential oils *** and ***(P<0.01).Conclusions:The preparation of nanoemulsion from the essential oils of *** and ***,significantly increases the protection time and reduces ED50 values of these essential oils,hence,*** Nano and *** Nano can be good alternatives to DEET and other chemical compounds.

关键词： Essential oil N,N-diethyl-m toluamide Nanoemulsion Eucalyptus Mentha Mosquito repellent

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Parametric study and effect of calcination and carbonation conditions on the CO_2 capture performance of lithium orthosilicate sorbent

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Chinese Journal of Chemical Engineering 2018年第3期26卷 631-641页

作者： Nurul Azrin Zubbri Abdul rahman Mohamed Maedeh mohammadi Low Carbon Economy (LCE) Research Group School of Chemical Engineering Engineering Campus Universiti Sains Malaysia Faculty of Chemical Engineering Babol Noushirvani University of Technology

The world is currently facing the challenges of global warming and climate change. Numerous efforts have been taken to mitigate CO2 emission, among which is the use of solid sorbents for CO2 capture. In this work, Li4SiO4 was synthesised via a sol-gel method using lithium nitrate （LiNO3） and tetraethylorthosilicate （SiC8H20O4） as precursors. A parametric study of Li：Si molar ratio （1-5）, calcination temperature （600-800℃） and calcination time （1-8 h） were conducted during sorbent synthesis. Calcination temperature （700-800℃） and carbonation temperature （500-700℃） during CO2 sorption activity were also varied to confirm the optimum operating temperature. Sorbent with the highest CO2 sorption capacity was finally introduced to several cyclic tests to study the durability of the sorbent through 10 cycles of CO2 sorption-desorption test. The results showed that the calcination temperature of 800℃ and carbonation temperature of 700℃ were the best operating temperatures, with CO2 sorption capacity of 7.95 mmol CO2·（g sorbent）^-1 （93% of the theoretical yield）. Throughout the ten cyclic processes, CO2 sorption capacity of the sorbent had dropped approximately 16.2% from the first to the tenth cycle, which was a reasonable decline. Thus, it was concluded that Li4SiO4 is a potential CO2 solid sorbent for high temperature CO2 capture activity.

关键词： CO2 capture Adsorption Carbon dioxide Lithium orthosilicate Sol-gel Sorption-desorption

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Life history pattern of mosquitofish Gambusia holbrooki (Girard, 1859) in the Tajan River (Southern Caspian Sea to Iran)

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Chinese Journal of Oceanology and Limnology 2011年第1期29卷 167-173页

作者： PATIMAR rahman GHORBANI Mohsen GOL-mohammadi Ali AZIMI-GLUGAHI Hoda Gonbad Institutes of Higher Education Shahid Fallahy Street

Investigation of the ecology of introduced species in new habitats can allow determinations of the degree, direction, and rate of evolutionary change. The introduction of Gambusia holbrooki in the southern Caspian Sea presents such a situation. We evaluated the life history traits of mosquitofish in the Tajan River basin. A total of 744 G. holbrooki specimens were collected between January and December 2008. The maximum observed ages are 0+ years for males and 1+ years for females. Both sexes grew allometrically (negative for males: b=2.442 and positive for females: b=3.232). The overall sex ratio is unbalanced and dominated by females. GSI values suggest that this population of G. holbrooki matures between February–July. The highest mean GSI value is 1.80 for males and 15.97 for females in May. Egg diameter ranges from 1.00 to 3.00 mm with a mean value of 2.098 mm. Absolute fecundity varied from 7 to 57 eggs. Both ova diameter and absolute fecundity were positively correlated to fish size (length and weight). Fecundity relative to total weight fluctuated from 34.44 to 582.64 eggs/g, and to total length from 2.33 to 12.95 eggs/cm. Both were negatively correlated with female size. The characteristics of this population are important with respect to life history of the species.

关键词： Gambusia holbrooki age structure reproduction southern Caspian Sea Iran

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