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.
Self-compacted concrete (SCC) considered as a revolution progress in concrete technology due
to its ability for flowing through forms, fusion with reinforcement, compact itself by its weight
without using vibrators and economic advantages. This research aims to assess the fresh
properties of SCC and study their effect on its compressive strength using different grading zones
and different fineness modulus (F.M) of fine aggregate. The fineness modulus used in this study
was (2.73, 2.82,2.9& 3.12) for different zones of grading (zone I, zone II& marginal
zone(between zone I&II)) according to Iraqi standards (I.Q.S No.45/1984).Twelve mixes were
prepared, each mix were tested in fresh state with slump, V-Funnel and L-Box tests, then 72
Background: Poly propylene fibers with and without silane treatment have been used to reinforce heat cure denture base acrylic but, some mechanical properties like transverse strength, impact strength, tensile strength, hardness, wear resistance and wettability. Which are related to the clinical use of the prosthesis are not evaluated yet. The aim of the study is to identify the influence of incorporation of treated and untreated fibers on these properties
Materials and methods: Eighty four heat cure acrylic specimens were constructed by conventional flasking technique. They were divided into six groups according to the tests and each group was subdivided into two subgroups control and experimental groups (seven samples for each subgroup
Objective: In order to evaluate the effect of different typed of Separating Medium on the roughness of the fitted tissue surface of acrylic denture base. Methodology: Chosen three types of separating medium (Group A Tin foil), (Group B Detery Isolant),(Group C Cold Mould Seal),used 30 samples of hot cure acrylic resin ,10 samples for each group, after complete curing of these samples , Profilometer device was used to measure the surface roughness of each sample in all groups. Results: Using One Way ANOVA Test and LSD test, the results were highly significant in differences among all groups. Although (Group A) showing lest roughness, (Group B) showing a satisfactory result of roughness, While (Group C) Showing the hig
The aim of the current research is to identify the Effect of the alternative evaluation strategy on the achievement of fourth-grade female students in the subject of biology. The researchers adopted the zero hypothesis to prove the research objectives, which is there is no statistically significant difference at the level (0.05) between the average scores of the experimental group who study according to the alternative evaluation strategy and the average scores of the control group who study in accordance with the traditional method. The researchers selected the experimental partial adjustment design of the experimental and control groups with the post-test. The researchers intentionally selected (Al-fed
The study is about Maxwell , three dimensions of non – Newtonian fluid. Method of th
Homotopy applied to analysis mass transfer and heat with thermophoresis effects.
(Sc), Impact of therrmophoretic (𝜏), magnetic (M), Biot (γ), radiation (Rd),Schmidt
Prandtle (Pr) parameters and ratio parameter(β) on concentration, temperature are
offered in the paper.
Publication Date
Sat Sep 28 2024
Journal Name
Journal Of International Dental And Medical Research
This study aims to evaluate the influence of the air abrasion of dentin on the shear bond strength of lithium disilicate using three different types of luting cements.
Sixty cylindrical specimens were milled from lithium disilicate CAD/CAM blocks (IPSe.max CAD). Sixty sound human maxillary premolar teeth were decoronated to the level of peripheral dentin, then randomly divided into three groups according to the type of luting cement used for the cementation of the lithium disilicate specimens (n = 20); Group A: Glass ionomer cement (Riva Self- Cure); Group B: Adhesive resin cement (Rely X Ultimate); Group C: Self-adhesive resin cement (Rely X U200). Each group was then further subdivided into two subgroups (n=10); Subgroups AI, BI, and CI,
