Restoration of degraded lands by adoption of recommended conservation management practices can rehabilitate watersheds and lead to improving soil and water quality. The objective was to evaluate the effects of grass buffers (GBs), biomass crops (BCs), grass waterways (GWWs), agroforestry buffers (ABs), landscape positions, and distance from tree base for AB treatment on soil quality compared with row crop (RC) (corn [Zea mays L.]–soybean [Glycine max (L.) Merr.] rotation) on claypan soils. Soil samples were taken from 10‐cm‐depth increments from the soil surface to 30 cm for GB, BC, GWW, and RC with three replicates. Soil samples were collected from summit, backslope, and footslope landscape positions. Samples were taken at 50‐ and 150‐cm distances from the tree base. β‐Glucosidase, β‐glucosaminidase, dehydrogenase, fluorescein diacetate hydrolase (FDA), soil organic carbon (SOC), total nitrogen (TN), active carbon (AC), and water‐stable aggregates (WSA) were measured. Results showed that β‐glucosidase, β‐glucosaminidase, dehydrogenase, FDA, AC, WSA, and TN values were significantly greater (P < 0.01) for the GB, BC, GWW, and AB treatments than for the RC treatment. The first depth (0–10 cm) revealed the highest values for all soil quality parameters relative to second and third depths. The footslope landscape had the highest parameter values compared with summit and backslope positions. The 50‐cm distance of AB treatment had higher values than the 150‐cm distance for all measured parameters. Results showed that perennial vegetation practices enhanced soil quality by improving soil microbial activity and SOC.
Core Ideas
Permanent vegetative management (trees and grasses) enhanced soil quality.
Perennial practices improved microbial activity and increased soil organic carbon.
Perennial vegetative practices have agricultural and environmental significance.
Establishing perennial practices is an effective approach to enhance soil quality.
The aim of the present study was to demonstrate the possible role of statins on the inflammatory biomarkers in patients with periodontal disease (PD)
This cross-sectional study involved 74 patients with PD and/or dyslipidemia divided into Group A: 34 patients with PD (nonstatins users); Group B: 40 patients with PD (statins users); and Group C: 30 healthy controls. Total cholesterol (TC), triglyceride (TG) and high-density lipoprotein, C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and malondialdehyde (MDA) were measured . Blood pressure prolife and indices of PD were evaluated in each group. Statistical analysis was conducted by using SPSS version 20.0.
In this paper, thermal performance of a zig-zig solar air heater (ZZSAH) with and without using steel wire mesh on the absorber plate of the collector is experimentally investigated. The experimental work includes four inclination angles of the collector 20o, 30o, 45o, and 60o and four air mass flow rates of 0.03, 0.04, 0.06, and 0.08 kg/s under varieties of operating conditions of a geographic location of Baghdad. New correlation equations of Nusselt number are obtained from experimental results for both types of collectors where the effect of varying of the inclination angle of collector taken into consideration in the experiment. The correlations show good agreement wi
A prey-predator interaction model has been suggested in which the population of a predator consists of a two-stage structure. Modified Holling's disk equation is used to describe the consumption of the prey so that it involves the additional source of food for the predator. The fear function is imposed on prey. It is supposed that the prey exhibits anti-predator behavior and may kill the adult predator due to their struggle against predation. The proposed model is investigated for existence, uniqueness, and boundedness. After determining all feasible equilibrium points, the local stability analyses are performed. In addition, global stability analyses for this model using the Lyapunov method are investigated. The chance of occurrence of loc
The problem of noise in the Baghdad airport has been examined in this study; and noise
measurement and survey studies have been carried out at four high noise level (operation, training and
development, quality system, and information and technology) zones located in this region. Noise exposure is a
common hazard to workforce in general although at varying degrees depending on the occupation, as many
workers are exposed for long periods of time to potentially hazardous noise. A questionnaire was completed by
122 workers during this study in order to determine the physical, physiological, and psycho-social impacts of
the noise on workers and to specify what kind of measurements have been taken both by the employers and
workers for protection
The problem of noise in the Baghdad airport has been examined in this study; and noise
measurement and survey studies have been carried out at four high noise level (operation, training and
development, quality system, and information and technology) zones located in this region. Noise exposure is a
common hazard to workforce in general although at varying degrees depending on the occupation, as many
workers are exposed for long periods of time to potentially hazardous noise. A questionnaire was completed by
122 workers during this study in order to determine the physical, physiological, and psycho-social impacts of
the noise on workers and to specify what kind of measurements have been taken both by the employers and
workers for protection
Understanding the compatibility between spider silk and conducting materials is essential to
advance the use of spider silk in electronic applications. Spider silk is tough, but becomes soft
when exposed to water. Here we report a strong affinity of amine-functionalised multi-walled
carbon nanotubes for spider silk, with coating assisted by a water and mechanical shear
method. The nanotubes adhere uniformly and bond to the silk fibre surface to produce tough,
custom-shaped, flexible and electrically conducting fibres after drying and contraction. The
conductivity of coated silk fibres is reversibly sensitive to strain and humidity, leading to
proof-of-concept sensor and actuator demonstrations.
For the graph
, the behavior associated with to the majority of the graphical properties of this graph is covered in this article. The reflection of the capabilities of
on the Ly constructions is one of the key ideas addressed throughout this paper. For instance, by this technique we can comprehend the mechanism via which groups of relatively tiny structure are exist within Ly.
: Cervical malignancy positioned as the fourth most prevalent disease among women around the world. HPVs
especially HPV16 are the causative agent of cervical cancer, responsible of about 5% of all human cancers worldwide. Some
researchers found that the fibronectin is repressed by the papillomavirus (HPV) type 16 E7 oncoprotein in both HPV-positive
nontumorigenic and tumorigenic cell lines, while others found that the HPV oncoprotein increase the levels of fibronectin. The
aim is to study the effect of HPV infection on Fibronectin expression and their correlation onthe development of
Cervicalcancinoma. The current retrospective study enrolled paraffinized blocks of two groups. The research included 30
cervical carcinomatous tissues as well
