نتایج جستجو برای: soil science society of america journal sssaj
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with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
SSSAJ: Volume 72: Number 5 • September–October 2008 Soil Sci. Soc. Am. J. 72:1292-1298 doi:10.2136/sssaj2007.0348 Received 25 Sept. 2007. *Corresponding author ([email protected]). © Soil Science Society of America 677 S. Segoe Rd. Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, i...
مقدمه:امروزه تعدد و کیفیت نامعلوم مجلات حیطههای مختلف علوم پزشکی، پژوهشگران را در انتخاب مجله مناسب برای انتشار نتایج تحقیقات علمی سردرگم کرده است. شاید معیارهای سنجش کیفیت مجلات بتوانند این مشکل را تا حدودی حل کنند؛ لذا مطالعه حاضر با هدف بررسی کیفیت مجلات حوزه زنان و مامایی بر اساس شاخصهای رتبهبندی مجلات در پایگاههای اطلاعاتی معتبر انجام شد. روش کار: این مطالعه به صورت توصیفی تحلیلی و به...
introduction: today, huge quantity of medical journals with indescribable quality, have confused health researchers while choosing a suitable journal to publish their scientific results. it seems that quality measuring criteria of journals could have solved this problem to some extent. in this study, we studied quality of journals of obstetrics and gynecology field indexed in the valid database...
in his last years of life americans had almost forgotton steinbeck, and those who had not, occasionally criticized him for supporting and praising the u. s. military intervention in the vietnam war. althought ateinbeck incorporates different themes into his works, each one bears many signs of his concern and sympathy for america and the american common people in particular. steinbecks to a god ...
Supplemental material available online. Soil Sci. Soc. Am. J. 79:1470–1481. doi:10.2136/sssaj2015.03.0101 Received 13 Mar. 2015 Accepted 13 July 2015. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA. All Rights reserved. Influence of Forest Disturbance on Stable Nitrogen Isotope Ratios in Soil and Vegetation Profiles Forest, ...
1 Soil Sci. Soc. Am. J. 75:1–8 Posted online 17 Nov. 2010 doi:10.2136/sssaj2009.0216 Received 10 June 2009. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, record...
in the netherlands, serious soil investigations were started in the mid-1800s and in the mid-1900s with university courses and the establishment of research institutes soil science rapidly expanded. the dutch and western european society have changed dramatically in the past century from and early industrial society with a dominantly rural and agricultural character to a post-industrial society...
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