scholarly journals CHANGES IN THE PHYSICOCHEMICAL PARAMETERS OF CHESTNUT SOILS IN WESTERN KAZAKHSTAN UNDER THE INFLUENCE OF THE GRAZING TECHNOLOGIES

2020 ◽  
Vol 17 (35) ◽  
pp. 192-202
Author(s):  
Beybit NASIYEV ◽  
Askhat BEKKALIYEV ◽  
Nurbolat ZHANATALAPOV ◽  
Vladimir SHIBAIKIN ◽  
Rakhimzhan YELESHEV
Keyword(s):  
Statistical Analysis ◽  
Physicochemical Parameters ◽  
Cattle Grazing ◽  
Exchangeable Sodium ◽  
Optimal Range ◽  
Standard Methods ◽  
Chestnut Soils ◽  
The Third ◽  
Western Kazakhstan ◽  
Mobile Phosphorus

Managing pasture resources of Western Kazakhstan is complicated due to the deterioration of the physicochemical parameters of soils, manifesting degradation, and alkalinization as a result of intensive grazing. The research has been aimed at studying the technology of cattle grazing for preserving the physicochemical parameters of soils and increasing the efficiency of pasture use. The assessment and statistical analysis of physicochemical indicators of soils were carried out with standard methods during 2018 – 2019, which allowed identifying the most optimal grazing technology. The results of the research showed that under the influence of intensive grazing, physicochemical parameters worsened, a decrease in the humus reserves by 10.88-12.35% was detected, soil degraded to the third degree, and became alkaline as a result of the increase in exchangeable sodium to 1.65 cmol (equiv.)/kg. The technology of moderate cattle grazing favorably affects the physicochemical parameters of the soils of pasture ecosystems. The chestnut soils of the pastures, where moderate grazing technology was applied, remained resistant to degradation and salinization. With this technology, the soil humus was reliably preserved at the level of 1.15-2.50%, mobile phosphorus was within the optimal range of 0.87-1.60 mg/100 g. It has been concluded that it is important to use the technology of moderate cattle grazing to improve the management of pasture resources, which is the scientific novelty of the research.

ESTIMATION OF THE INFLUENCE OF GRASSLOWING TECHNOLOGY ON THE STATE OF THE SOIL COVER OF PASTURES OF THE SEMI-DESERT ZONE

2020 ◽  
Vol 18 (4) ◽  
pp. 88-95
Author(s):  
B.N. Nasiyev ◽  
◽  
A.K. Bekkaliyev ◽  
Keyword(s):  
Physicochemical Parameters ◽  
Soil Cover ◽  
Cattle Grazing ◽  
Optimal Level ◽  
Exchangeable Sodium ◽  
Standard Methods ◽  
The Third ◽  
Western Kazakhstan ◽  
Mobile Phosphorus ◽  
Desert Zone

Managing pasture resources of Western Kazakhstan is complicated due to the deterioration of the physicochemical parameters of soils manifestating degradation and alkalinization as a result of intensive grazing. The research has been aimed at studying the technology of cattle grazing for preserving the physicochemical parameters of soils and increasing the efficiency of pasture use. The assessment and analysis of physicochemical indicators of soils were carried out with standard methods during 2018-2020, which allowed identifying the most optimal grazing technology. The results of research showed that under the influence of intensive grazing, physicochemical parameters worsened, a decrease in the humus reserves by 28.50% was detected, soil degraded to the third degree and became alkaline as a result of increase in exchangeable sodium to 1.66 mg(equiv.)/100g. Technology of moderate cattle grazing favorably affects the physicochemical parameters of the soils of pasture ecosystems. The chestnut soils of the pastures, where moderate grazing technology was applied, remained resistant to degradation and salinization. With this technology, the soil humus was reliably preserved at the level of 1.17%, mobile phosphorus was within the optimal level of 0.88 mg/100g.

De pensioenbescherming van flexibele werknemers in België

2006 ◽  
Vol 22 (2) ◽  
Author(s):  
Annelies Debels ◽  
Hans Peeters ◽  
Gert Verschraegen ◽  
Jos Berghman
Keyword(s):  
Statistical Analysis ◽  
Old Age ◽  
Pension System ◽  
Panel Study ◽  
Research Strategy ◽  
The Third ◽  
Temporal Flexibility ◽  
Part Time ◽  
Coordinated Regulation ◽  
Pension Benefits

Old age protection of flexible workers in Belgium Old age protection of flexible workers in Belgium This article investigates to what extent the Belgian pension system is adapted to the proliferation of a-typical forms of employment. Are there any differences between the old age protection of flexible and non-flexible workers? What are the effects of flexible employment on participation in the three pension pillars and on the level of pension benefits? To answer these questions, the article pursues a double research strategy: an analysis of Belgian legislation and relevant collective labour agreements is complemented with a statistical analysis on the Panel Study of Belgian Households (PSBH). The analyses show that part-time employment results in a lower pension, while other forms of temporal flexibility such as temporary leave arrangements and temporary unemployment do not. In the second pillar we find that contractual and transitional flexible workers are discriminated. Finally, the results indicate that flexible workers do not compensate for lower pension protection through increased participation in the third pension pillar. Our findings suggest that a re-assessment of the system of ‘assimilated’ periods is required, as well as the development of a system of coordinated regulation for the three pension pillars.

scholarly journals THE LOCATION OF THE XANTHATE GROUPS IN PARTLY SUBSTITUTED CELLULOSE XANTHATES

1957 ◽  
Vol 35 (12) ◽  
pp. 1522-1533 ◽  
Author(s):  
E. P. Swan ◽  
C. B. Purves
Keyword(s):  
Cellulose Acetate ◽  
Chlorine Dioxide ◽  
Methyl Esters ◽  
Lead Tetraacetate ◽  
Degree Of Substitution ◽  
Hydroxyl Groups ◽  
Primary Position ◽  
Standard Methods ◽  
The Third ◽  
Almost All

Cellulose sodium xanthates of degree of substitution (D.S.) 0.4 to 0.66 were methylated to xanthate S-methyl esters which were then acetylated completely, the final xanthate D.S. remaining close to the original value. Dexanthation with aqueous chlorine dioxide near pH 4.5 and −5° removed almost all of the S-methyl xanthate groups, but the loss of a few acetyl groups from, and the retention of 1 to 2% of sulphur in, the resulting cellulose acetate could not be avoided. The original xanthate groups were presumably represented in this acetate as unsubstituted hydroxyl groups, and these were located by standard methods involving tosylation–iodination, tritylation, and oxidations with lead tetraacetate. Xanthate groups appeared to occupy the third and sixth, but not the second, position in the cellulose, and 53 to 61% of the substituent was in the sixth or primary position; one sample of viscose was "ripened" before the cellulose sodium xanthate was isolated, and the value was 81%. The results were of a preliminary nature, because severe technical difficulties reduced their reliability.

scholarly journals POTENTIOMETRIC PARAMETERS IN PATIENTS WITH NON-REMOVABLE ORTHOPEDIC STRUCTURES AND INTRAORAL HALITOSIS

2018 ◽  
pp. 17-20
Author(s):  
O.A. Udod ◽  
A.O. Hlivynska
Keyword(s):  
Oral Cavity ◽  
Physicochemical Parameters ◽  
Oral Fluid ◽  
Personal Hygiene ◽  
Control Group ◽  
Social Maladjustment ◽  
Dental Alloys ◽  
The Third ◽  
Unpleasant Odor ◽  
Bioelectric Potentials

Introduction. The most popular type of dentures is permanent orthopedic structures. However, their use is a serious intervention that changes biological balance in the oral cavity through galvanic, reflex and toxic allergic effects. Because of this, galvanic currents appear in the oral cavity, which have an adverse effect on the oral mucosa and the physicochemical parameters of the oral fluid. As a result of increasing bioelectric potentials in the oral cavity, oral microbiocenosis disorders may occur, the periodontium pathology develops or worsens and an unpleasant odor arises, which in aggregate can cause a social maladjustment of the patient. It is known that the main intraoral factor in the development of halitosis is the unsatisfactory hygienic condition of the oral cavity. Non-removable dentures made from non-noble dental alloys can also significantly affect the development of intraoral halitosis. Objective. To study potentiometric parameters in patients with intraoral halitosis who have fixed orthopedic constructions made of various materials by various technologies. Methods and Materials. 158 people aged 35-55 years with fixed orthopedic constructions in the oral cavity in the amount of 5-8 units with a service life of 2-3 years were examined. Four groups were formed: with stamped-brazed dentures, with cast-denture prostheses from dental alloys, with cast-in-place titanium structures and a control group without disrupting the integrity of the dentition. All patients underwent a sanation of the oral cavity, professional hygiene and anti-inflammatory treatment. In addition, hygienic training of patients with quality control of personal hygiene was conducted. In the course of the study, 35 patients from the first and second groups after the complex treatment were replaced by replacing the existing dentures with orthopedic structures made of titanium. The effectiveness of treatment was assessed by the dynamics of indices of hygiene, PMA, organoleptic assessment of halitosis and potentiometric parameters. Results. As a result of the study, it was found that patients with dentures, manufactured with the help of the stamped-brazed technology, were characterized by high indices of hygiene (1.29 ± 0.18 points) and PMA (66.79 ± 2.48%). The I degree of halitosis was observed in 27 patients (41.5%) of this group, II degree was observed in 35 people (53.8%) and III degree in 3 people (4.6%). In the second group, the hygiene index was 0.97 ± 0.12, the PMA index was 65.57 ± 2.18%. In 33 patients (67.4%) I degree of halitosis was detected, in 16 patients (32.6%) – II degree. In the third group, the hygiene index was 0.84 ± 0.12, the PMA index was 56.23 ± 1.22. Unpleasant odor in the majority of patients in this group (40 people or 90.9%) was determined when approaching a distance of 10 cm, which corresponded to I degree of halitosis. Only 4 patients (9.1%) had halitosis of II degree. In the control group, the KPI index was 12.13 ± 0.24, the level of hygiene was on average 0.81 ± 0.12 points and 55.56 ± 1.13%, respectively. There were no organoleptic signs of halitosis in this group.

scholarly journals Tolerance of certain sugar beet varieties to diseases

2008 ◽  
Vol 53 (3) ◽  
pp. 173-181
Author(s):  
S. Radivojevic ◽  
Irena Dosenovic ◽  
V. Filipovic ◽  
R. Rozic
Keyword(s):  
Statistical Analysis ◽  
Sugar Beet ◽  
Sugar Industry ◽  
Sugar Yield ◽  
Cercospora Beticola ◽  
Infestation Level ◽  
Chemical Analyses ◽  
Standard Methods ◽  
Trial Network ◽  
Second Year

Sugar beet varieties' micro trials were conducted at Kikinda site in 2005 and at five localities from the provincial trial network in 2006. The micro trials were set according to standard methods with 5 replications each year. Sugar beet was harvested at two periods in both years. Chemical analyses were conducted at the laboratories of the Faculty of Technology. The obtained data were processed according to the standard methods used in the Serbian sugar industry. Statistical analysis was performed using two-way ANOVA procedures. The results showed that varieties with triple tolerance to diseases (Solea and Gazeta) had marked performance in the trial at Kikinda site as compared to other varieties. Variety Solea was the highest in granulated sugar yield (10.941 t/ha) while control had 6.565 t/ha in the second harvest term at Kikinda site. The lowest infestation level with Cercospora beticola was recorded for the above mentioned varieties with triple tolerance and which were scored with 1.8 and 1.3 points, respectively, in the ranking scale that ranged from 0 to 5 points. Similar results were obtained in the second year of experiment. Variety Prestige, also triple tolerant to diseases, showed the best performance in the granulated sugar yield, yielding 13.969 t/ha. This variety showed the best tolerance to Cercospora beticola, being scored with only 0.4 points on the ranking scale for infestation level. Accordingly, the triple tolerant varieties of sugar beet were among the highest in the root and granulated sugar yields with equal number of treatments against Cercospora beticola.

scholarly journals The influence of proteinuria on tubular transport of Na+, K+, CL

2002 ◽  
Vol 130 (3-4) ◽  
pp. 64-67
Author(s):  
Dejan Petrovic ◽  
Radmila Obrenovic ◽  
Mileta Poskurica ◽  
Biljana Stojimirovic
Keyword(s):  
Statistical Analysis ◽  
Creatinine Clearance ◽  
Significant Influence ◽  
Fractional Excretion ◽  
T Test ◽  
The Third ◽  
Tubular Transport ◽  
Student’S T ◽  
Student’S T Test

Functional and structural damages of tubulointerstitium are caused by proteinuria. The aim of this study was to assess the influence of different proteinuria levels on Na+, K+, Cl tubular transport. We examined 50 patients (24 males, 26 females), mean age 46.50 ? 13.08 years, with mean creati-nine clearence of 87.29 ? 31.17 mL/min. They were separated in three groups depending on proteinuria value. The first group with proteinuria less than 0.3 g/24h included 19 persons (7 males, 12 females), mean age 45.12 ? 13.28 years, with mean creatinine clearance of 94.27 ? 34.70 mL/min. The second group of 18 patients (8 males, 10 females), mean age 45.39 ? 12.64 years had proteinuria of 0.3-3,0 g/24h and mean creatinine clearance of 90.07 ? 31.89 mL/min. The third group had proteinuria level higher than 3.0g/24h and mean creatinine clearance of 73.25 ? 20.44 mL/min. It included 13 patients (9 males, 4 females), mean age 50.08 ? 13.73 years. As a parameter of proteinuria influence on tubular transport of Na+, K+ and Cl-, fractional excretion of these electrolytes, was studied. Student's T test, Mann Whitney U test and c2 test were used for statistical analysis. No statistically significant influence of proteinuria was found on Na+, K+ and Cl tubular transport.

scholarly journals The distribution of the maximum of partial sums of Kloosterman sums and other trace functions

2021 ◽  
Vol 157 (7) ◽  
pp. 1610-1651
Author(s):  
Pascal Autissier ◽  
Dante Bonolis ◽  
Youness Lamzouri
Keyword(s):  
Distribution Function ◽  
Recent Work ◽  
Character Sums ◽  
Kloosterman Sums ◽  
Partial Sums ◽  
Optimal Range ◽  
Uniform Estimates ◽  
The Third ◽  
Distribution Of The Maximum ◽  
Complex Valued

In this paper, we investigate the distribution of the maximum of partial sums of families of $m$ -periodic complex-valued functions satisfying certain conditions. We obtain precise uniform estimates for the distribution function of this maximum in a near-optimal range. Our results apply to partial sums of Kloosterman sums and other families of $\ell$ -adic trace functions, and are as strong as those obtained by Bober, Goldmakher, Granville and Koukoulopoulos for character sums. In particular, we improve on the recent work of the third author for Birch sums. However, unlike character sums, we are able to construct families of $m$ -periodic complex-valued functions which satisfy our conditions, but for which the Pólya–Vinogradov inequality is sharp.

scholarly journals An Environmental Study on Phytoplankton (Diatoms) in Al-Yusifiya River, Iraq

2014 ◽  
Vol 11 (3) ◽  
pp. 1301-1309
Author(s):  
Baghdad Science Journal
Keyword(s):  
Dissolved Oxygen ◽  
Water Temperature ◽  
Electric Conductivity ◽  
Physicochemical Parameters ◽  
Environmental Study ◽  
Euphrates River ◽  
The Third ◽  
Centric Diatoms

An environmental study conducted on diatoms in Al Yusifiya river beyond its branching from Euphrates river. Four sites were selected along the river for the period from march 2013 to September 2013. The present study involved the measurement of physicochemical parameters, also the qualitative and quantities of diatoms. The studied parameters values ranged as follows: 19-44Cº and 16-30 Cº for air and water temperature respectively, 6.9-8.7, 595-1248 µS/cm, 6.4-8.0 mg/l for pH, electric conductivity and dissolved oxygen respectively. A total of 74 taxa were recorded for diatoms, where the pinnate diatom was the predominant and recorded 64 taxa while 10 taxa for centric diatoms. The total number of diatoms was 1197.55*104 cell /l. The total number values were ranged as follows:( 28.3-48.6) *104 cell /l in the first site ,( 33.6-51.5) *104 cell /l in the second site,( 39.8-67.2) *104 cell /l in the third site and ( 22.3-38.0) *104 cell /l in the fourth site. Two species Asterionellaformosa Hassall and Diploneispuella Schumann were noticed in site 2 only, while C. prostateBerkeleyfound in all studied sites expect in site 1. StephaenodicushantzschiiGrunow and Didymosphenia geminate (lyngb.) Schmidtwere recorded in sites 1 and 3, Anomoeoneissp was recorded in sites 1 and 4 only. The Mastogloiasp was noticed only in sites 2 and 4.

Discrimination and Delegation

2021 ◽  
Author(s):  
Lamis Elmy Abdelaaty
Keyword(s):  
Statistical Analysis ◽  
Refugee Camps ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
The World ◽  
The Face ◽  
Successive Step ◽  
Multi Level ◽  
State Responses

What explains state responses to the refugees they receive? This book identifies two puzzling patterns: states open their borders to some refugee groups while blocking others (discrimination), and a number of countries have given the United Nations (UN) control of asylum procedures and refugee camps on their territory (delegation). To explain this selective exercise of sovereignty, the book develops a two-part theoretical framework in which policymakers in refugee-receiving countries weigh international and domestic concerns. Internationally, leaders use refugees to reassure allies and exert pressure on rivals. Domestically, policymakers have incentives to favor those refugee groups with whom they share an ethnic identity. When these international and domestic incentives conflict, shifting responsibility to the UN allows policymakers to placate both refugee-sending countries and domestic constituencies. The book then carries out a “three-stage, multi-level” research design in which each successive step corroborates and elaborates the findings of the preceding stage. The first stage involves statistical analysis of asylum admissions worldwide. The second stage presents two country case studies: Egypt (a country that is broadly representative of most refugee recipients) and Turkey (an outlier that has limited the geographic application of the Refugee Convention). The third stage zooms in on sub- or within-country dynamics in Kenya (home to one of the largest refugee populations in the world) through content analysis of parliamentary proceedings. Studying state responses to refugees is instructive because it can help explain why states sometimes assert, and at other times cede, their sovereignty in the face of refugee rights.

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