نتایج جستجو برای: defence against ahriman

تعداد نتایج: 565004  

Journal: :The European respiratory journal 1990
W Merrill

The respiratory tract must be open to the environment to allow exchange of gas between air and blood. This renders lhe lungs susceptible to colonization and infection by foreign organisms. It is necessary for lhe lower respiratory tract to have mechanisms to contain and control such foreign material. The gas exchange surface of lhe lung must be thin, delicate and permeable, rhus the mechanisms ...

Journal: :Journal of Research and Practice in Information Technology 2006
Guangsen Zhang Manish Parashar

Distributed denial of service (DDoS) attacks on the Internet have become an immediate problem. As DDoS streams do not have common characteristics, currently available intrusion detection systems (IDS) cannot detect them accurately. As a result, defend DDoS attacks based on current available IDS will dramatically affect legitimate traffic. In this paper, we propose a distributed approach to defe...

Journal: :British medical journal 1976
L P Garrod

How does resistance arise in bacteria ? One process is simply selection; treatment with an antibiotic eliminates sensitive strains and enables an originally very small minority of resistant ones to survive and spread. This is undoubtedly what happened among staphylococci in the early days of penicillin. When exposure to a drug-antibiotic or synthetic-is followed by resistance in a previously se...

Journal: :Ecology letters 2013
Eric M Lind Elizabeth Borer Eric Seabloom Peter Adler Jonathan D Bakker Dana M Blumenthal Mick Crawley Kendi Davies Jennifer Firn Daniel S Gruner W Stanley Harpole Yann Hautier Helmut Hillebrand Johannes Knops Brett Melbourne Brent Mortensen Anita C Risch Martin Schuetz Carly Stevens Peter D Wragg

Plant growth can be limited by resource acquisition and defence against consumers, leading to contrasting trade-off possibilities. The competition-defence hypothesis posits a trade-off between competitive ability and defence against enemies (e.g. herbivores and pathogens). The growth-defence hypothesis suggests that strong competitors for nutrients are also defended against enemies, at a cost t...

Journal: :Journal of Theoretical Biology 2009

Journal: :Nature Reviews Microbiology 2015

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