检索结果-南通市图书馆

Analytical Calculation of the energy in a Permanent Magnet

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2016年第16期7卷 2281-2287页

作者： Jean-Paul Yonnet Christian Chillet Hicham Allag lotfi Chouikhi Laboratoire de Génie electrique de Grenoble G2E Lab Université Grenoble Alpes Grenoble France Laboratoire de Génie electrique de Grenoble G2E Lab CNRS Grenoble France Laboratoire d’electronique et d’electrotechnique Industrielle Jijel University Jijel Algeria

The energy in permanent magnet is not a trivial problem because it exist two types of energy: the field energy and the demagnetizing energy. For parallelepiped shape, the magnet energy has been calculated by fully analytical expressions in 3D. The result has been obtained after four successive integrations of Arctangent and Logarithm functions. The analytically calculated energy corresponds to the demagnetization energy in the magnet. The analytical results have been compared with different terms of energy obtained by computation.

关键词： Analytical Calculation energy Permanent Magnet

effect of Dietary Lipid Levels on Fatty Acids Composition of Cultured Sparusaurata

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Life Sciences 2016年第6期10卷 312-320页

作者： Zayene Nesrine Gam Haouas Wafa Guerbej Hamadi Achour lotfi Integrative Biology and Valorisation (LR 14 eS 06) Institute of Biotechnology Monastir 5000 Tunisia National Institute of Marine Sciences and Technologies Monastir 5000 Tunisia

The aim of this study was to determine the progressive evolution of fish muscle fatty acids composition feeding by different lipid levels of farmed Mediterranean gilthead sea bream （Sparusaurata）. During twenty one weeks, Sparusaurata were hand-feed two diets with protein and lipid ratios 47/20 （Diet A） and 45/22 （Diet B） respectively. At the end of the feeding period, lipid contents of muscle, as well as fatty acids profiles of different portions of the muscles were studied. Results indicated the effects of fatty acids profiles of diets throughout the liver and white muscle fillet （dorsal, middle and ventral）. These were more noticeable when Sparusaurata was fed on the diet Athat decreased the content of monounsaturated fatty acids （MUFA）, and polyunsaturated fatty acids （PUFA） in all the muscles during the period of feeding while the saturated fatty acids （SFA） content tended to increase and it was lower than ones in the muscles of Sparusaurata fed on diet B. The highest amount of PUFA and docosahexaenoic acid, （22：6n-3 DHA） were found among the different portions of ventral muscles. In addition, the progressive evolution of different parts of muscle＇s fatty acid profiles showed significant differences in contents of SFA, PUFA and especially the n-3 PUFA. However, the content of MUFA seems to be alike in different muscles and tended to decrease in dorsal and ventral muscle from Do to Df and inversely when the fish were fed on diet A.

关键词： Fatty acids Liver Muscles cultured fish Sparusaurata.

Microbiological Quality of Dates in the North Center Region of Morocco

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Life Sciences 2013年第12期7卷 1278-1283页

作者： Taouda Hasnae errachidi Faouzi Aarab lotfi Chabir Rachida Team of Physiopathology and Nutrition Laboratory of Biology Cancer Faculty of Medicine and Pharmacy University SidiMohamed Ben Abdellah Fez 30000 Morocco Bioactives Molecules Laboratory Faculty Saiss of Sciences and Technic University Sidi Mohamed Ben Abdelah Fez 30000Morocco

Date palm （Phoenix dactylifera L.） fruit is an important component in arid and semi-arid diet regions of the world. The present study pointed out microbial investigating of date palm collected from National wholesale market in Fez city in the center north of Morocco. The results reveal that samples dates studied are contaminated by bacteria such as TAMF （total aerobic mesophilic flora）, ASR （anaerobic sulfite reducing）, yeasts and molds. The percentage of yeasts isolated is 50% for Saccharomyces cervisae, 10% for Zygosaccharomyces fermentati, 20% for Hansenula anomala, 10% for Lodderomyces elongisporus and 10% for Kluyveromyces fragilis. The frequency of molds distribution is 51% for Aspergillus niger, 33% for Penicillium notatum and 16% for Rhizopus oryzae. Newman and keuls grouping test shows that fungal germs distribution is equal for yeast and molds in all samples analyzed. In the opposite bacterial grouping test shows greet difference between groups of bacteria isolated from date＇s samples.

关键词： Dates Phoenix dactylifera bacteria fungi and microbial analysis.

Meaning in the Holy Quran： A Text Analysis of the ＂Surah Livestock＂（＂A1-An＇am＂） Within the Framework of Grice＇s Theory of Implicature

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sino-US english Teaching 2013年第11期10卷 868-885页

作者： Ali ebrahimi Badejani Maryam Afshari Badejani Ahmad Reza lotfi Khansar Branch-Isfahan University Isfahan Iran University of Isfahan Isfahan Iran Islamic Azad University-Khorasgan Branch Isfahan Iran

The Holy Quran （1982） is the Holy Book of the Moslems and the most understandable aspect of its eloquence. One of the most interesting aspects found in different languages is the use of implicatures or implied meaning. How and why such implicatures are generated and are discussed in pragmatics？ In this study, a list of conversations （direct and indirect） from ＂Surah Livestock＂（＂A1-An＇am＂）, the sixth Chapter of the Holy Quran, and the implicatures implied in the conversations are analyzed through a pragmatic theory： CP （Cooperative Principle）. The present study shows that in most cases, the non-observance of Grice＇s （1975） maxims is found in the maxim of Quantity and the least in Manner. Grice＇s CP and its contributory maxims have not been observed in the ＂Surah Livestock＂ in this study. All maxims of Grice have been flouted in This Surah （1982） and there is no difference among Gricean maxims as far as flouting in the Surah is concerned.

关键词： "Surah Livestock" ("A1-An'am") eloquence implicature CP (Cooperative Principle) maxims of Quality Quantity Relevance and Manner

Comparison of signal reconstruction under different transforms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Southeast University(english edition) 2015年第4期31卷 474-478页

作者：刘洁媛伍家松 lotfi Senhadji 舒华忠东南大学计算机网络与信息集成重点实验室南京210096 东南大学中法生物医学信息研究中心南京210096 法国国家医学与健康研究院 u1099法国雷恩35042 雷恩第一大学信号与图像处理实验室法国雷恩35042

A newalgorithm, called Magnitude Cut, to recover a signal from its phase in the transform domain, is ***, the recovery problem is converted to an equivalent convex optimization problem, and then it is solved by the block coordinate descent（ BCD） algorithm and the interior point algorithm. Finally, the one-dimensional and twodimensional signal reconstructions are implemented and the reconstruction results under the Fourier transform with a Gaussian random mask（ FTGM）, the Cauchy wavelets transform（ CWT）, the Fourier transform with a binary random mask（ FTBM） and the Gaussian random transform（ GRT） are also comparatively analyzed. The analysis results reveal that the M agnitude Cut method can reconstruct the original signal with the phase information of different transforms; and it needs less phase information to recover the signal from the phase of the FTGM or GRT than that of FTBM or CWT under the same reconstruction error.

关键词： MagnitudeCut algorithm signal reconstruction different transforms convex optimization phase information

Study of the Prevalence of Hypertension and Complications of Hypertensive Disorders in Pregnancy

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Journal of Preventive Medicine 2014年第11期4卷 860-867页

作者： Shahla Khosravi Soheila Dabiran M. lotfi Mohammad Asnavandy Reproductive Health and Community Medicine Faculty of Medical Sciences Tehran University of Medical Sciences Tehran Iran Reproductive Health and Community Medicine Faculty of Medical Sciences Tehran University of Medical Sciences Tehran Iran Department of Community Medicine Tehran University of Medical Sciences Tehran Iran Islamic Azad University of Varamin Varamin Iran

Introduction: Hypertension is one of the common problems associated with pregnancy that may be followed by eclampsia, acute renal failure, maternal death, premature delivery, intra-uterine growth restriction and other. This study was conducted to determine the results of pregnancies associated with hypertension in patients visiting in the Delivery Ward of Valiasr Hospital. Methods: A descriptive study was conducted on all the patients admitted to the aforementioned department and who possessed the inclusion criteria for hypertensive pregnancy. Results: Among the 1694 delivery cases examined, 173 cases had hypertension (9.8%). Among these, 75 (45%) had gesta-tional hypertension;24 (14.8%) had preeclampsia-eclampsia;30 (18%) had preeclampsia su-perimposed on chronic hypertension;21 (13.5%) cases had chronic hypertension;and 13 (8%) had pregnancy-aggravated chronic hypertension. Ninety-six point three percent (96.3%) had a systolic blood pressure (BP) of 140 - 190 mmHg, and 3.7% had a systolic BP greater than 190 mmHg. Whereas 61.1% of diastolic blood pressure 90 - 110 mmHg and 38.9% of the mothers had diastolic BP greater than 110 mmHg. The HeLLP (Hemolysis, elevated Liver enzymes & Low Platelet count) syndrome was present in 4.9% of cases;52.6% experienced premature delivery;7.4% had IUFD (intra uterine fetal death);9.9% had IUGR (intrauterine growth retardation);and 17.3% had LBW babies. Conclusions: Based on our results, hypertensive mothers who are younger and have lower weight babies at birth experience more perinatal complications. The unpleasant effects of hypertension in pregnancy warrant the need for training, routine prenatal care, the early detection and treatment of hypertension at younger ages of pregnancy, and follow-up after delivery.

关键词： Hypertension Pregnancy Induced Hypertension Preeclampsia eclampsia Chronic Hypertension

Application of Different Image Processing Techniques on Aster and eTM+ Images for exploration of Hydrothermal Alteration Associated with Copper Mineralizations Mapping Kehdolan Area (eastern Azarbaijan Province-Iran)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Geology 2014年第11期4卷 582-597页

作者： Golchin Hajibapir Mohammad lotfi Afshar Zia Zarifi Nima Nezafati Department of Geology Islamic Azad University Science and Research Branch Tehran Iran Department of Geology Islamic Azad University North Tehran Branch Tehran Iran Mining engineering Department Islamic Azad University Lahijan Branch Lahijan Iran

The Kehdolan area is located at 20 kilometers to the?south-east of Dozdozan Town (eastern Azarbaijan Province). According to structural geology, volconic rocks are situated in Alborz-Azarbyjan zone, and faults?are?observed?in?the?same direction to this system with Se-NW trend. The results show that kaolinite alteration trend with Argilic and propylitic veins?is the?same direction with SW-Ne faults in this area. Therefore, these faults with these trends can be considered as the mineralization control for determination of the alterations. Different image processing techniques,?such as false color composite?(FCC), band ratios, color ratio composite?(CRC), principal component?analysis?(PCA), Crosta technique, supervised spectral angle mapping?(SAM), are used for?identification of the alteration zones associated with copper mineralization. In this project ASTeR?data are process and spectral analysis to fit for recognizing intensity and kind of argillic, propylitic,?philic, and eTM+ data?which?are process and to fit for iron oxide and relation to metal mineralization of the area. For recognizing different alterations of the study area, some chemical and mineralogical analysis data from the samples showed that ASTeR data and eTM+ data were?capable of hydrothermal alteration mapping with copper mineralization.?Copper mineralization in the region is in agreement with argillic alteration. SW-Ne trending faults controlled the mineralization process.

关键词： Kehdolan Area False Color Composite Band Ratios Color Ratio Composite Principal Component Analysis Crosta Technique Supervised Spectral Angle Mapping ASTeR Data eTM+ Data Alteration

Mineralization, Mineralogy and Geochemistry of Saheb Fe-Cu Deposit of Saqqez (Kurdestan), NW Iran

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Geology 2018年第5期8卷 514-528页

作者： Zahra Zandi Alireza Jafari Rad Arash Gourabjeripour Mohammad lotfi Department of Geology Science and Research Branch Islamic Azad University Tehran Iran Department of Geology Myianeh Branch Islamic Azad University Myianeh Iran Department of Geology North Tehran Branch Islamic Azad University Tehran Iran

The Saheb Fe-Cu skarn deposit is located in the Sanandaj-Sirjan metamorphic belt, Se Saqqez, western Iran and has been formed along the contact between the Oligo-Miocene aged Saheb granitoid and the Permian aged impure calcareous rocks and includes endoskarn and exoskarn. exoskarn is widely developed and includes garnet and epidote skarn zones. The majority of mineralized zones are concentrated in garnet skarn. The relatively oxidizing mineralogical assemblage of the Saheb skarn includes garnet (andradite-grossular), pyroxene (diopside-hedenbergite), magnetite and hematite. Magnetite is the main and abundant ore mineral throughout the ore deposit. Based on field evidences and microscopic studies of skarn zone samples, two stages of prograde and retrograde alteration are distinguishable. According to the results of sample analysis of Saheb skarn intrusive body by XRF and ICP-MS techniques, the combination of this body is chiefly granite to granodiorite-diorite and belongs to the I-type granitoids, metaluminous and K-rich calc-alkaline series. The Saheb granitoid is related to the VAG (Volcanic Arc Granite) tectonic setting.

关键词： Iran Saqqez Saheb Deposit Iron Skarn Metasomatism Magnetite

Performance evaluation of wavelet scattering network in image texture classification in various color spaces

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Southeast University(english edition) 2015年第1期31卷 46-50页

作者：伍家松姜龙玉韩旭 lotfi Senhadji 舒华忠东南大学计算机网络和信息集成教育部重点实验室南京210096 东南大学中法生物医学信息研究中心南京210096 法国国家医学与健康研究院U1099 法国雷恩35000 雷恩第一大学信号与图像处理实验室法国雷恩35000

The optimized color space is searched by using the wavelet scattering network in the KTH_TIPS_COL color image database for image texture classification. The effect of choosing the color space on the classification accuracy is investigated by converting red green blue （RGB） color space to various other color spaces. The results show that the classification performance generally changes to a large degree when performing color texture classification in various color spaces, and the opponent RGB-based wavelet scattering network outperforms other color spaces-based wavelet scattering networks. Considering that color spaces can be changed into each other, therefore, when dealing with the problem of color texture classification, converting other color spaces to the opponent RGB color space is recommended before performing the wavelet scattering network.

关键词： wavelet scattering network color texture classification color spaces opponent mechanism