41 research outputs found
Residues of triazine herbicides in a vineyard after a long-term application
In an experimental vineyard of Attica, where triazine herbicides (atrazine and simazine) were applied yearly since 1965 in annual doses of 5 kg a.i./ha, determinations of herbicide residues in the soil were made with a sensitive bioassay.Determinations after 6, 9 and 14 years of application have shown that no significant accumula,tlon of atrazine or simazine is observed in the soil layers of 0-10 cm and 10-20 cm.The detected quanfüy of herbicides has never overpassed the 2 kg a.i./ha which is 40 % of the annually applied dose. 'The influence of temperature and moisture on the degradation of herbicide was also studied. It was found that, when only one of the two factors is favourable, the degradation of atrazine is slow.Herbicides triazine résiduaires dans un vignoble après application à long termeDans un vignoble expérimental de la région d' Attique, où depuis 1965 on emploie régulièrement les herbicides atrazine et simazine à une dose annuelle de 5 kg m.a./ha, nous avons mesuré les résidus dans le sol au moyen d'un test biologique. Ces mesures ont montré qu'après 6, 9 et 14 ans d'application continue l'accumulation de l'atrazine ou de la simazine est faible dans les couches de sol de 0--10 cm et de 10--20 cm.La quantité de l'herbicide décelée ne dépassait pas les 2 kg m.a./ha ou les 40 % de la dose annuelle appliquée.Nous avons étudié aussi l'influence de l'humidité et de la température sur la dégradation de l'atrazine; nous avons observé qu'elle est faible dans les cas où seulement l'un des deux facteurs est favorable
Effects of odderon spin on helicity amplitudes in elastic scattering
In recent years, the discovery of the odderon, a colorless -odd gluonic
compound, has been confirmed in the TOTEM and D0 collaborations. However, the
spin quantum number of the odderon remains unidentified. In this work, we aim
to attribute a spin of to the odderon in elastic scattering by
calculating the helicity amplitudes and the corresponding complex parameter
, the ratio of helicity's single-flip to non-flip amplitudes, for the
spin-3 tensor odderon with the standard spin-2 tensor pomeron exchanges. Then,
we apply these results to the constraints obtained from the STAR experiment at
RHIC. By comparing to the contributions of the spin-1 vector odderon and spin-2
tensor pomeron, we demonstrate that the spin-3 tensor odderon, i.e. ,
provides a better explanation for the observable in elastic scattering.Comment: 11 pages, 2 figure
Implementation of village fund management among the Wajo Bugis ethnic, Indonesia
The village fund program is a government program to accelerate and equalize development in rural areas, oriented towards poverty alleviation in Indonesia. This research aims to describe the Village Fund Program policy implementation in Wajo Regency, South Sulawesi. The type of research used is qualitative. Data was collected through in-depth interviews with informants and observations in the research object area. The informants in this study were selected purposively and in snowball sampling. The novelty of this research is to examine the successful implementation of village fund program policies in Wajo Regency using a combination of Jones's theory and Edward's theory based on three pillars, namely (1) organizational pillar, (2) interpretation pillar, and (3) application pillar, which is connected to ethnic culture. Wajo bugis. The research results show that implementing the village fund program in Wajo Regency needs to run optimally. This is because the competency of individual program implementers needs to be improved. The regulations governing program policies open up opportunities for abuse. Institutionally, policy implementers need more time to be ready to run the program optimally because the readiness of the organizational infrastructure needs to be balanced
Circulating steroid levels as correlates of adipose tissue phenotype in premenopausal women
Background: Obesity-related alterations in the circulating steroid hormone profile remain
equivocal in women. Our objective was to identify circulating steroid levels that relate to
increased adiposity and altered adipose phenotype in premenopausal women. Materials and
methods: In a sample of 42 premenopausal women (age 46±3 years; BMI 27.1±4.2 kg/m2
), 19
plasma steroids were quantified by ESI-LC-MS/MS. Body composition and fat distribution were
assessed by dual-energy X-ray absorptiometry and computed tomography, respectively. Markers
of adipose tissue function including adipocyte size distributions, radiological attenuation, and
macrophage infiltration were also analyzed in surgically obtained visceral and subcutaneous fat
samples. Results: Many negative correlations were observed between adiposity measurements
such as BMI, body fat percentage or total abdominal adipose tissue area and plasma levels of
androstenedione (r=-0.33 to -0.39, p≤0.04), androsterone (r=-0.30 to -0.38, p≤0.05) and plasma
levels of steroid precursor pregnenolone (r=-0.36 to -0.46, p≤0.02). Visceral adipocyte
hypertrophy was observed in patients with low pregnenolone concentrations (p<0.05). Visceral
adipose tissue radiologic attenuation, a potential marker of adipocyte size, was also positively
correlated with pregnenolone levels (r=0.33, p<0.05). Low levels of pregnenolone were related to
increased number of macrophages infiltrating visceral and subcutaneous adipose tissue (p<0.05).
Conclusion: Plasma levels of androgens and their precursors are lower in women with increased
adiposity and visceral adipocyte hypertrophy. Low circulating pregnenolone concentration may
represent a marker of adipose tissue dysfunction
Association of kidney disease measures with risk of renal function worsening in patients with type 1 diabetes
Background: Albuminuria has been classically considered a marker of kidney damage progression in diabetic patients and it is routinely assessed to monitor kidney function. However, the role of a mild GFR reduction on the development of stage 653 CKD has been less explored in type 1 diabetes mellitus (T1DM) patients. Aim of the present study was to evaluate the prognostic role of kidney disease measures, namely albuminuria and reduced GFR, on the development of stage 653 CKD in a large cohort of patients affected by T1DM. Methods: A total of 4284 patients affected by T1DM followed-up at 76 diabetes centers participating to the Italian Association of Clinical Diabetologists (Associazione Medici Diabetologi, AMD) initiative constitutes the study population. Urinary albumin excretion (ACR) and estimated GFR (eGFR) were retrieved and analyzed. The incidence of stage 653 CKD (eGFR < 60 mL/min/1.73 m2) or eGFR reduction > 30% from baseline was evaluated. Results: The mean estimated GFR was 98 \ub1 17 mL/min/1.73m2 and the proportion of patients with albuminuria was 15.3% (n = 654) at baseline. About 8% (n = 337) of patients developed one of the two renal endpoints during the 4-year follow-up period. Age, albuminuria (micro or macro) and baseline eGFR < 90 ml/min/m2 were independent risk factors for stage 653 CKD and renal function worsening. When compared to patients with eGFR > 90 ml/min/1.73m2 and normoalbuminuria, those with albuminuria at baseline had a 1.69 greater risk of reaching stage 3 CKD, while patients with mild eGFR reduction (i.e. eGFR between 90 and 60 mL/min/1.73 m2) show a 3.81 greater risk that rose to 8.24 for those patients with albuminuria and mild eGFR reduction at baseline. Conclusions: Albuminuria and eGFR reduction represent independent risk factors for incident stage 653 CKD in T1DM patients. The simultaneous occurrence of reduced eGFR and albuminuria have a synergistic effect on renal function worsening
Effects of odderon spin on helicity amplitudes in
In recent years, the discovery of the odderon, a colorless C-odd gluonic compound, has been confirmed in the TOTEM and D0 collaborations. However, the spin quantum number of the odderon remains unidentified. In this work, we aim to attribute a spin of to the odderon in pp elastic scattering by calculating the helicity amplitudes and the corresponding complex parameter , the ratio of helicity’s single-flip to non-flip amplitudes, for the spin-3 tensor odderon with the standard spin-2 tensor pomeron exchanges. Then, we apply these results to the constraints obtained from the STAR experiment at RHIC. By comparing to the contributions of the spin-1 vector odderon and spin-2 tensor pomeron, we demonstrate that the spin-3 tensor odderon, i.e. , provides a better explanation for the observable in pp elastic scattering