recognizing the herbaceous plant species diversity could use as an importantindicator applied for the rangeland and forests management. considering the presence ofvegetation and animal husbandry in zagros region, iran, being aware of the diversity andrichness of plant species is necessary to management or the destructed vegetationrestoration. in order to study the effect of aspect and elevation...

Eleven general practitioners examined the medical records of all women on their lists born in 1950 (617 patients) and 1935 (533 patients) to determine the prevalence of childlessness and specialist consultations about infertility. Eighty eight (14.3%) of the women born in 1950 and 41 (7.7%) of those born in 1935 were childless. Sixty eight women born in 1950 (11.0%) and 17 born in 1935 (3.2%) w...

Material examined. Lectotype: female: (yellow label) = [China], A-tun-tse, (Nord-Yunnan), obere Höhe ca. 4500 m, 24.7.1937 H. Höne; (red label) = Prp.Nr.: 12008 ZFMK f, Lectotypus Polia sublimis (Draudt, 1950), Prp. Behounek 2012; here designated, coll. ZFMK. Other material: 1 male, Likiang. (China), Nord-Yuennan, 16.5.1935. H. Höne (X); 44 males and females, same locality and collector, 3.7.-2...

the aim of the study is the classification of landform based on elevation, slope, relief and curvature inputs (old method) and topographic position index (tpi) (new method) in the south of bojnoord. the input data for the two methods is a digital elevation model (dem). the results of topographic position index (tpi) model showed that most area of landform were covered by class 5 (plains small) ...

after 1860’s the railway systems has started to be used in urban transportation in the world. however, especially after the 1950’s, automobile usage has been increased quickly. thus the dense of transportation has started to move from railway systems to the ones with rubber tire vehicles in istanbul. traffic density in urban transportation has started to be experienced since 1950 with the incre...

this paper develops new results on the use of model predictive control to regulate the attitude of a ground station antenna. two degree of freedom az-el pedestal is considered as ground station antenna. permanent magnet synchronous motors are taken into consideration as the best choice for satisfaction of control objectives as actuators. the design is based on a two cascade controller consist o...

The 1950 amendments to the Social Security Act made substantial changes in old-age and survivors insurance coverage and benefits. Of the new provisions that were effective September 1950, one—the increase in current insurance benefits—had an almost immediate effect on public assistance caseloads and expenditures, as reported in the following pages. A later article will summarize the impact on t...

The genus Mesosaimia Breuning, 1938 is reviewed. The genus Trichipocregyes Breuning, 1950 is synonymized with Mesosaimia. Trichomesosa similis Breuning, 1950 is transferred to Mesosaimia. A new species, M. wakaharai sp. nov., is described from Laos. Four species, M. robusta Breuning, 1938, M. mausoni (Breuning, 1950) comb. nov., M. similis (Breuning) comb. nov. and M. wakaharai sp. nov., are in...

It is well known that elevated levels of antibodies against various antigens of Group A pyogenic streptococci are found in rheumatic fever (Harris, 1948; Rantz and others, 1951). This phenomenon may be due to the increased immunologic reactivity of the macro-organism, to repeated natural infection by the micro-organism, or to the persistence of the micro-organism in the body of the host longer ...

Poliomyelitis has been endemic in England and Wales since its notification was made compulsory in 1912, but prior to 1947 its incidence was, with the exception of three years, of the nature of a sporadic disease with a seasonal rise rather than that of an epidemic disease. This was in contrast to the experience of the United States and some continental countries, where large epidemics had occur...