نتایج جستجو برای: needles
تعداد نتایج: 6613 فیلتر نتایج به سال:
This paper describes the background and early implementation of a peer-based HIV prevention intervention involving social marketing of sterile needles and syringes for injection drug users (IDUs) in a border region of northern Vietnam and southern China. Peer educators collect and safely dispose of used needles and syringes and provide IDUs with a choice of new needles/syringes or vouchers rede...
BACKGROUND Pharmacists' role in harm reduction is expanding in many states, yet there are limited data on pharmacists' willingness to participate in harm reduction activities. This study assessed community pharmacists' willingness to participate in one harm reduction initiative: syringe/needle exchange. METHODS In 2015, all Kentucky pharmacists with active licenses were emailed a survey that ...
Sink strength in loblolly pine (Pinus taeda L.) was experimentally manipulated on two sun-exposed branches on each of two neighboring trees by excising the emerging terminal cohort (second flush of 1996) during a period of rapid needle expansion. In addition, export of photosynthate was restricted on one of these branches from each tree by removal of bark and phloem just below the second flush ...
Abstract Pore diameter and arc thickness of propellant are decided by the extrusion mold parameters. Mold needles deform during propellant’s forming process because material’s high viscosity needle’s flexibility, which affects quality products. Based on fluid-structure interaction, we simulated 19-hole nitroguanidine studied influence law structural parameters deformation needles. The results s...
The structure and development of endodermal Casparian strips in Pinus bungeana needles and roots were studied by scanning electron microscopy and fluorescence microscopy. Primary pit fields (PFs) frequently occurred in radial walls of Casparian strips isolated from needles, whereas PFs were never detected in Casparian strips from roots. Formation of Casparian strips in needles as well as roots ...
We examined the effects of three foliar potassium concentrations (high, intermediate and low) on the morphology, ultrastructure and polyamine concentrations of current-year and 1- and 2-year-old needles of 30-year-old Scots pine (Pinus sylvestris L.) trees. Foliar K concentration had only a slight effect on needle morphology. The sclerenchyma cell walls were thinner, the xylem area was larger, ...
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