scholarly journals Estimation of Accurate and New Method for Hemodialysis Dose Calculation

2008 ◽  
Vol 1 ◽  
pp. CMU.S771
Author(s):  
Ahmad T. Azar

Background The Kt/V value demonstrates the dose of hemodialysis (HD). However, because of several existing methods for calculating delivered dialysis dose, Kt/V values can, in fact, be different for the same set of pre-/post-dialysis blood urea concentrations. Methods In the study presented here, another formula was derived for calculating Kt/V from the pre- and post-dialysis BUN. We prospectively compared the Kt/V values obtained using this new formula and the Kt/V values obtained via the other existing formulae to see whether reliance on the latter approach was likely to lead to errors in over- or underprescribing dialysis regimens. Data were processed on 268 dialysis patients. Results The estimated Kt/V (Kt/Vest) values were statistically different (p < 0.05) from the calculated Kt/V values from other models, except for those Kt/V values calculated according to the lowrie (P = 0.112), Keshaviah (P = 0.069), Daugirdas First Generation (P = 0.059), Basile (P = 0.102), Ijely (P = 0.286) and Daugirdas Second Generation (P = 0.709). The best correlations were seen with the Daugirdas second generation formula (R = 0.958 and R2 = 0.919). Conclusion Since the best correlations were seen between Kt/Vest and the Daugirdas second generation Kt/V we can demonstrate that these two models are more accurate than the other models.

2020 ◽  
Vol 24 (4) ◽  
pp. 861-880 ◽  
Author(s):  
Ksenia Gnevsheva

Aims and Objectives/Purpose/Research Questions: The paper aimed to investigate style-shifting in the use of ethnolectal features in first- and second- generation bilingual migrants. Design/Methodology/Approach: Three groups of speakers (first- and second-generation Russian–English bilinguals as well as monolingual Anglo Australians) were audio-recorded in three different styles (conversation, interview, and reading). Data and Analysis: Their production of the goose and trap vowels across the styles was analyzed quantitatively. Findings/Conclusions: Overall differences were found between the groups such that first- and second-generation speakers produced more Russian-like vowels compared to the monolinguals; with the biggest differences between the first-generation speakers and the other two groups. In terms of style-shifting, no significant differences were found in the monolingual speakers, and both first- and second-generation speakers were found to produce most Australian English-like vowels in the conversation style. At the same time, certain differences between the two bilingual groups surfaced, such as no significant differences in the first-generation speakers’ production of the goose vowel and in the vowels’ linguistic conditioning. Originality: Previous studies have compared ethnolects in the first- and second-generations of migrants and mainstream varieties in order to theorize ethnolect formation. Several studies have also investigated intraspeaker style-shifting between more ‘mainstream’ and more ‘ethnic’ in ethnolect speakers, but such style-shifting is rarely compared across generations. Significance/Implications: The similarities and differences between the two bilingual groups suggest that ethnolectal features may be originally derived from the community language but may be reallocated to other sociolinguistic meanings in the second generation.


Author(s):  
Arkebe Oqubay

Contemporary industrial hubs evolved in East Asia after the 1950s and have been associated with the industrial catch-up of the East Asian economies and their industrial policies. This chapter has three main objectives: to depict the path of hubs development in these pioneering economies and provide a synthesis of the East Asian experience; to extract relevant lessons for policymakers and practitioners; and to provide a perspective on how industrial hubs can synergize industrialization and technological catch-up. Although there are commonalities, experiences have been uneven across these economies with different stages of development. The experiences of the first-generation industrial hubs, namely, Taiwan (China), South Korea, and Singapore are reviewed, followed by China as the second generation. A synthesis, key observations, and conclusions are reviewed. The chapter will complement the other chapters under Part IV through synthesis and lessons, while it complements the analytical perspectives under Parts I and II of the Handbook, by building on arguments and conceptual perspectives.


HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 416E-417
Author(s):  
Norberto Maciel ◽  
Richard A. Criley

Heliconia rostrata is a herbaceous-musoid sympodial rhizomatous plant that grows as clump. After three leaves are produced, each shoot of the clump may bear an inflorescence if it is induced by short days (SD). However, the relationship between shoot density and flowering has not been quantified. To evaluate the effects of the inductive period, number of shoots, and leaf removal on flowering, rhizomes were planted in 120 pots (8 L). One-third of the pots were planted with two rhizomes, while the remainder was planted with one. One-half of the pots with one rhizome were allowed to develop all their shoots for three generations, while in the remaining pots only one shoot per generation was allowed to grow. In addition, one-half of the plants in all the treatments were subjected to selective leaf removal. The plants were grown under long days (LD) >13 h in a glasshouse until four leaves were produced. Inductive SD was supplied to all the plants from 5:00 pm to 8:00 am. After 8 weeks of SD, one-half of the plants were given LD, while the other half continued under SD (conSD) until flowering. The highest percentage of flowering shoots (39% to 35%) was observed in plants under conSD; plants under SD-LD were 10% to 9%. The second generation of shoots showed the highest flowering (74% conSD and 21% SD-LD), followed by the first (62% conSD and 18% SD-LD), and third (31% conSD and 0% SD-LD) generations. Non-flowering shoots of the first generation were aborted or dead. Shoots of the third were still vegetative, since they had few leaves to be induced. Fewer flowers occurred in clumps allowed to develop all their shoots. Intact plants from rhizomes with one shoot per generation flowered more than the partially defoliated ones under conSD.


1994 ◽  
Vol 68 (1) ◽  
pp. 63-66 ◽  
Author(s):  
D. Rondelaud

AbstractAdult Lymnaea truncatula were subjected to 10 days of experimental desiccation and then remained in water for 1 or 8 days before each was exposed to a single miracidium. The infection rate was lower in these snails than in infected controls that were not exposed to stress (52–54% vs 73%). The redial burden clearly decreased in stressed snails (18–25 rediae per snail) than in controls (43 rediae). This numerical decrease concerned essentially: i) live independent rediae of the first generation and the first cohort of the second generation, and ii) dependent rediae of subsequent generations. Mature rediae were more numerous in the first cohort of the second generation than in the other generations. Desiccation before exposure limited the size of the redial burden but placement in water for 8 days just after the stress attenuated the effects of this factor.


Author(s):  
IRENA KOGAN

Austria has fairly complex patterns of post-World War II immigration. In addition to classic labour migrants from Turkey and the former Yugoslavia, there have been considerable inflows of refugees and displaced persons, such as Hungarians or Czechs migrating to Austria from communist countries as well as more recent refugee groups from the Middle East and Africa. The second generation of labour migrant groups have made considerable progress in education compared with the first generation, but, unlike the other two groups, still lag some way behind their native Austrian counterparts. They also continue to experience considerable ethnic penalties in the labour market, especially in access to the salariat. These penalties may be due partly to discrimination but also to the fact that people who do not hold Austrian citizenship are excluded from public sector (‘Beamte’) jobs, many of which are in the salariat.


1996 ◽  
Vol 21 (1) ◽  
pp. 42-43
Author(s):  
H. Reissig ◽  
D. Dunham ◽  
C. Smith

Abstract Dilute sprays were applied with a hand sprayer (450 psi) at pink (9 May), petal fall (26 May), and as cover sprays on 14 Jun, 29 Jun, 10 Jul, 26 Jul, 7 Aug, and 20 Aug. Treatments of the standard compound, Guthion, were applied at pink, and petal fall through sixth cover. Comply and CGA-59205 were applied at pink and first cover and Guthion 3F was applied alone in the other sprays (petal fall and second through sixth cover). Several schedules of V71639 were compared; (1) A complete seasonal schedule applied at pink, petal fall, and in the first through sixth cover sprays. (2) A pink and first cover spray. (3) A petal fall and second cover spray. Guthion 3F was applied alone to fill in the other normal spray intervals in the reduced programs (2 & 3) of V71639. Treatments were replicated 3 times on a single tree plot of ‘McIntosh’ apples and arranged in a RCB design. Damage from early-season plum curculio and the first generation of codling moth were estimated by sampling 100 apples on the tree in each replication on 5 Jul. At harvest (6-12 Sep) 100 apples from each replication were evaluated for insect damage. ERM and predaceous mites were sampled on 25 randomly selected leaves/replication on 4 Aug. On 6 Jul (7 days post-treatment) aphids were counted on the second or third distal leaf on each of 10 actively growing terminals in each replication. WALH were counted on 25 spur leaves on 29 Aug. First generation STLM tissue mines were counted on 25 fruit clusters from the ‘McIntosh’ trees in each replication on 21 June. Second generation STLM tissue mines were counted on the six distal leaves on 10 randomly selected “hardened off” terminals/replication on 29 Aug.


1993 ◽  
Vol 4 (5) ◽  
pp. 1205-1213
Author(s):  
J T Daugirdas

The original formula proposed to estimate variable-volume single-pool (VVSP) Kt/V was Kt/V = -In(R - 0.008 * t - f * UF/W), where in the Kt/V range of 0.7 to 1.3, f = 1.0 (* denotes multiplication). This formula tends to overestimate Kt/V as the Kt/V increases above 1.3. Because higher Kt/V values are now commonly delivered, the validity of both the urea generation term (0.008 * f) and correction for UF/W were explored by solving VVSP equations for simulated hemodialysis situations, with Kt/V ranging from 0.6 to 2.6. The analysis led to the development of a second-generation formula, namely: Kt/V = -In(R - 0.008 * t) + (4-3.5 * R) * UF/W. The first and second generation formulas were then used to estimate the modeled VVSP Kt/V in 500 modeling sessions in which the Kt/V ranged widely from 0.7 to 2.1. An analysis of error showed that this second-generation formula eliminated the overestimation of Kt/V in the high ranges found with the first-generation formula. Also, total error (absolute value percent error + 2 SD) was reduced with the second-generation formula. These results led to the proposal of a new formula that can be used for a very wide range of delivered Kt/V.


Author(s):  
Basim Abbas Hassan

The conjugancy coefficient is the very basis of a diversity of the conjugate gradient methods. In this research, we derivation a new formula of conjugate gradient methods based on the quadratic model. Our arithmetical findings have revealed that, our new method has the most excellent performance contrast to the other standard CG methods. Also give proof viewing that this method converges globally.


2019 ◽  
Vol 73 (2) ◽  
pp. 352-365 ◽  
Author(s):  
Gary Uzonyi ◽  
Victor Asal

The first generation of genocide scholars emphasized the role of discrimination in the onset of genocide and politicide. However, second-generation scholars discount such claims and have not found quantitative support for the discrimination hypothesis. We return to first-generation theories linking discrimination to genocide and politicide. We argue that while such policies set the stage for genocide, they do not influence the onset of politicide. This is because genocide is a policy aimed at eradicating the “other” while politicide is a policy designed to eliminate violent threat to the regime elites. Therefore, we encourage scholars not to conflate the logics of genocide and politicide. Statistical analysis of discrimination and government mass murder from 1955 to 2005 reveals that while some causes of genocide and politicide are similar, ethnic discrimination influences genocide but not politicide, as we expect.


1951 ◽  
Vol 42 (1) ◽  
pp. 185-194
Author(s):  
J. R. Busvine ◽  
N. F. Wilson

An experiment on a semi-practical scale was made to determine the effectiveness of DDT treatment to a new house, in quelling an infestation of bed-bugs introduced with untreated furniture. Two small huts were constructed, one being finally treated with DDT, the other acting as a control. Rabbits introduced nightly represented the hosts and infested rabbit-hutches the furniture.Forty adult bugs were introduced on the infested hutches in each hut. In the untreated chamber, the bug population soared up to over 400 in six months. In the treated hut the population remained at 10 to 20 up to the end of the experiment (28 weeks) ; these bugs remained in the untreated hutch. Translating these results to practical conditions, it appears that a bug colony might persist in an untreated bed in a room sprayed with DDT. However, the wandering bugs would be destroyed which would severely check population growth and prevent a heavy and widespread infestation.Observations in the untreated hut indicated the decline of the first generation adults, the rise and decline of the second generation and emergence of the third.A few preliminary tests with marked bugs proved that these insects do not usually return to the same site after going to the host to take a meal.


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