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تعداد نتایج: 166 فیلتر نتایج به سال:
This study explored common measures of well-being to assess whether the naturally emerging relationships are best explained by a ‘‘Big Two’’ (hedonic vs. eudaimonic) or another, yet to be discovered framework. A sample of young adult participants (n = 355) completed measures of life satisfaction, flourishing, positive and negative experience, meaning in life, basic psychological needs, and subj...
The impacts of large dams on the hydrology and ecology of river systems are well understood, yet the impacts of low-head structures are poorly known. While impacts of small weirs on upstream-migrating fish have long been mitigated by fish ladders, it is assumed that downstream migration of surface-oriented fishes is unaffected under natural flow regimes. To test this, the effects of low-head we...
Landau-type theories describe the observed behaviour of phase transitions in ferroelastic and co-elastic minerals and materials with a high degree of accuracy. In this review, the derivation of the Landau potential G=1/2AthetaS [coth(thetaS/T)-coth(thetaS/TC)]Q2 + 1/4BQ4 + ... is derived as a solution of the general phi4 model. The coupling between the order parameter and spontaneous strain of ...
The emphasis and direction of orthodontic treatment planning philosophies over the past century is a story almost all orthodontists are familiar with. In the latter part of the 19th century, Norman Kingsley, the leading orthodontist of the era, emphasized the esthetic objectives of orthodontic treatment. In the Kingsley paradigm, the articulation of the teeth was clearly secondary to facial app...
Reappraisals of the history and historiography of the Scottish Enlightenment abound these days. Yet however much is produced, authors continue to find new and interesting things to say. John Dwyer has certainly proved this in his excellent, fairly short study of the Scottish moralists. Dwyer, thankfully, has not taken the high road to philosophy but has investigated the output of the eighteenth...
River water-quality studies rarely measure dissolved inorganic carbon (DIC) routinely, and there is a gap in our knowledge of the contributions of DIC to aquatic carbon fluxes and cycling processes. Here, we present the THINCARB model (THermodynamic modelling of INorganic CARBon), which uses widely-measured determinands (pH, alkalinity and temperature) to calculate DIC concentrations, speciatio...
common in nature, having been documented in amphibians, insects, fish, birds, and especially within closely related plant species (Berger 1973; arnold 1992; Fritz et al. 1994; haddad et al. 1994; Parris et al. 1999; arnold et al. 1999; albert et al. 2006; Schierenbeck and Ellstrand 2009; Meyerson et al. 2010). allendorf et al. (2001) noted that hybridization is more common in fish than in other...
آنالیزهای سفالومتری رایج با رفرنسهای داخل جمجمه ای sn و پلن فرانکفورت در بعضی موارد و بخصوص در بیماران ارتوسرجری، یافته های نادرست تشخیصی و نتایج درمانی نامطلوبی به دنبال دارند که بیشترین علت آن عدم ثبات رفرنسهای داخل جمجمه ای است. موقعیت طبیعی سر (nhp) موقعیت استاندارد شده سر می باشد که ثبت آن در رادیوگرافی های لترال سفالومتری امکان استفاده از رفرنسهای خارج جمجمه ای را مسیر می نماید. هدف از ای...
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