Transmissão experimental do vírus do mosaico dourado do feijoeiro por Bemisia argentifolii Bellows & Perring

شناسایی و تعیین پراکنش سفید‌بالکهای Bemisia tabaci (Genn.) و Bemisia argentifolii Bellows and Perring در کشتزارهای پنبه ایران با استفاده از مارکرRAPD-PCR

سفید بالکهای پنبه, بویژه دو گونه Bemisia tabaci (Genn.) (Hom.: Aleyrodidae)و Bemisia argentifolii Bellows and Perring از مهمترین آفات محصولات زراعی ، گلخانه و گیاهان زینتی در ایران هستند؛ که علاوه بر تغذیه از شیره گیاهی, به دلیل انتقال بیماریهای ویروسی، ترشح عسلک و در نتیجه کاهش در فتوسنتز گیاهان, از اهمیت زیادی برخوردار می باشند. با انگیزه شناسایی و تعیین پراکنش بیوتیپ‌های سفیدبالک پنبه، 11 ...

Do We Know What We Do not Know? A Response to Celine Bonnet

Universal Grammar and Chaos/Complexity Theory: Where Do They Meet And Where Do They Cross?

  Abstract The present study begins by sketching "Chaos/Complexity Theory" (C/CT) and its applica-tion to the nature of language and language acquisition. Then, the theory of "Universal Grammar" (UG) is explicated with an eye to C/CT. Firstly, it is revealed that CCT may or may not be allied with a theory of language acquisition that takes UG as the initial state of language acquisition for ...

Ramadan fasting: Do we need more evidence?

Over a billion of Muslims fast worldwide during Ramadan each year. Through this religious custom, fasting contributes to their health as well as their spiritual growth. However, available evidence regarding the health-benefits of Ramadan fasting is scarce and highly contentious. Although Islam exempts patients from fasting, many fast conceivably, and their clinical condition is prone to deterio...

Do walkable neighborhoods promote physical activity؟

The American Society of Surgeons recommends that at least 30 minutes of moderate-intensity physical activity be performed daily for at least five days a week to ensure the minimum physical health of citizens. Follow these tips because there are not enough spaces, suitable, safe and secure for physical activity and sports for citizens or very rare (1).