Vertical transport of water and chemicals as affected by soil layering: a model study

Transport of water and chemicals in soils is controlled by soil properties and processes. Advection, adsorption, diffusion, and dispersion of the chemical are the main processes controlling the extent of transport of a chemical. Soil porosity and pore size distribution are the key factors controlling the water and solute flow by advection and dispersion, soil adsorption phenomena are the main factors controlling the retention of the chemical in soils. All these processes are highly variable by depth due to differences in soil characteristics of different soil horizons. This study was conducted to analyze interactions between soil layering and vertical transport of solutes and water at 2-m wide, 4-m long, and 0.5-m deep lysimeters constructed as field plots. Zero, five, ten, fifteen, and twenty cm thick sand layers (as treatments) were placed over a level alkaline surface, then 30 cm thick nonalkaline soil layers were packed over the sand layers. To represent plant effect, alfalfa was grown at each plot since it has a dense canopy. Changes in pH, EC, and in concentrations of Na, K, HCO3, and B in topsoil were monitored, measuring these variables in water extracts collected by vacuum samplers following rainfall and/or irrigation events. Water content of both repacked topsoil and alkali subsoil were measured in October, 2004 when soil was dry. At the final sampling, a representative profile was open in each research plot and morphological observations were made in these profiles. Soil pH decreased and then increased sharply irrespective to sand layer thickness, and concentrations of HCO3 and B showed a similar behavior. The EC of repacked topsoil decreased continuously probably due to the leaching of salts by application of excess amount of irrigation water, and Na concentration of soil solution increased continuously, which was attributed to sodium transported by capillary rising water from the blow alkali soil. Greater values for water content occurred at final sampling in alkali soil below 5- and 0-cm sand layers, indicating that sand layer with 10 cm thickness obscured percolation of excess water from irrigation and precipitation as observed in layered soil profiles. Roots of alfalfa concentrated in the zone of sand layers, and almost no roots of alfalfa penetrated into the alkali zone in search of water and nutrients. As morphological observations revealed, channels of decayed roots in the alkali soil served as preferential pathways of water and chemical from upper layers

Polarization and Spectral Energy Distribution in OJ 287 during the 2016/17 Outbursts

We report optical photometric and polarimetric observations of the blazar OJ 287 gathered during 2016/17. The high level of activity, noticed after the General Relativity Centenary flare, is argued to be part of the follow-up flares that exhibited high levels of polarization and originated in the primary black hole jet. We propose that the follow-up flares were induced as a result of accretion disk perturbations, traveling from the site of impact towards the primary SMBH. The timings inferred from our observations allowed us to estimate the propagation speed of these perturbations. Additionally, we make predictions for the future brightness of OJ 287.</p

Does Digital Templating of total knee arthroplasties reliable in hemophilic arthropathies?

[No Abstract Available

Plasma catestatin importance and correlation in patients with dipper and non-dipper hypertension patients

Catestatin (CST) is a metabolite of chromogranin A, a soluble protein in catecholamine storage vesicles acting as a feedback inhibitor of catecholamine secretion. This study aims to investigate the correlation of catestatin with dipper and non-dipper status in hypertensive patients. Hypertensive (n=355) and healthy subjects (n=129) were randomly selected at an outpatient clinic. Blood pressure and heart rate were measured according to relevant guidelines. Plasma catestatin level, plasma glucose, lipid levels were measured. An ambulatory blood pressure monitor was performed to determine the dipping patterns in hypertensive subjects. Univariate and multivariate analyses were conducted to assess factors affecting catestatin levels. Left ventricular mass was higher among hypertensives compared with healthy controls (178±47 g versus 213±52 g in healthy controls and hypertensives, p [Med-Science 2022; 11(4.000): 1402-8

Is it possible 'to forget the joint' after total knee replacements in hemophiliacs?

WOS: 00043199330013

Follicular Thyroid Cancer Presenting as a Pelvic Mass: A Case Report

Distant metastasis is uncommon in differentiated thyroid cancer (DTC) and 7% to 23% of DTC patients develop distant metastasis. The remarkably good prognosis and long-term survival in DTC are significantly reduced in patients with distant metastasis as those at the pelvic site. We report the rare case of a patient wth follicular thyroid cancer initially diagnosed as a pelvic mass

Follicular thyroid cancer presenting as a pelvic mass: A case report Pelvik Kitle ile Tan Konulan Folliküler Tiroid Kanseri Olgusu

Distant metastasis is uncommon in differentiated thyroid cancer (DTC) and 7% to 23% of DTC patients develop distant metastasis. The remarkably good prognosis and long-term survival in DTC are significantly reduced in patients with distant metastasis as those at the pelvic site. We report the rare case of a patient wth follicular thyroid cancer initially diagnosed as a pelvic mass

Echocardiographic features of patients with COVID-19 infection: a cross-sectional study

COVID-19 patients with cardiac involvement have a high mortality rate. The aim of this study was to investigate the echocardiographic features in COVID-19 patients between severe and non-severe groups. For this single-center study, data from patients who were treated for COVID-19 between March 25, 2020 and April 15, 2020 were collected. Two-dimensional echocardiography (2DE) images were obtained for all patients. Patients were divided into two groups based on the severity of their COVID-19 infections. 2DE parameters indicating right ventricular (RV) and left ventricular (LV) functions were compared between the two groups. A total of 90 patients hospitalized for COVID-19 were included in this study. The mean age of the severe group (n = 44) was 63.3 +/- 15.7 years, and 54% were male. The mean age of non-severe group (n = 46) was 49.7 +/- 21.4 years, and 47% were male. In the severe group, RV and LV diameters were larger (RV, 36.6 +/- 5.9 mm vs. 33.1 +/- 4.8 mm, p = 0.003; LV 47.3 +/- 5.8 mm vs. 44.9 +/- 3.8 mm, p = 0.023), the LE ejection fraction (LVEF) and the RV fractional area change (RV-FAC) were lower (LVEF, 54.0 +/- 9.8% vs. 61.9 +/- 4.8%, p < 0.001; RV-FAC, 41.4 +/- 4.1% vs. 45.5 +/- 4.5%, p < 0.001), and pericardial effusions were more frequent (23% vs. 0%) compared to patients in the non-severe group. A multiple linear regression analysis determined that LVEF, right atrial diameter, high-sensitivity troponin I, d-dimer, and systolic pulmonary artery pressure, were independent predictors of RV dilatation. The results demonstrate that both right and left ventricular functions decreased due to COVID-19 infection in the severe group. 2DE is a valuable bedside tool and may yield valuable information about the clinical status of patients and their prognoses