Phosphorus (P) is one of the major plant nutrients that directly or indirectly affect all biological processes. It is a key component of energy metabolism, and biosynthesis of nucleic acids and membranes. Phosphorus deficiency is considered to be one of the major limitations for crop production particularly in low-input agriculture systems around the world and nearly 80% of applied mineral P may be retained in the soil.  Roots provide an interface for P moving from one living system—the soil—into another living system—the plant. Microbial processes in soil are important for the distribution of P between various inorganic and organic P fractions and subsequently for the potential availability of phospha

In this study, the thermal buckling behavior of composite laminate plates cross-ply and angle-ply all edged simply supported subjected to a uniform temperature field is investigated, using a simple trigonometric shear deformation theory. Four unknown variables are involved in the theory, and satisfied the zero traction boundary condition on the surface without using shear correction factors, Hamilton's principle is used to derive equations of  motion depending on a Simple Four Variable Plate Theory for cross-ply and angle-ply, and then solved through Navier's double trigonometric sequence, to obtain critical buckling temperature for laminated composite plates. Effect of changing some design parameters such as, ortho

In this paper, an experimental analysis of conventional air-cooled and microchannel condensers in automotive vapor compression refrigeration cycle concerning heat transfer coefficient and energy using R134a as a refrigerant was presented. The performance of two condensers and cycles tested regarding ambient temperature which it was varied from 40^oC to 65^oC, while the indoor temperature and load have been set to be 23^oC and 2200 W respectively. Results showed that the microchannel condenser has 224 % and 77 % higher refrigerant side and air side heat transfer coefficient respectively than the coefficients of the conventional condenser. Thus, the COP, in case of using the microchannel

An experiment was carried out at the vegetable fields of Horticulture and Landscaping Design Dep. / College of Agriculture / university of Baghdad / Abu Ghraib on season  2014   to study the effect of spraying boron and Carbo lizer on the productivity and quality of cowpea seeds. Ramshorn c.v. Seeds are sowed on two dates; Spring and summer date. The experiment also includes the use of four concentrations of Boron: 0, 50, 100 and 200 mg. L^-1 Which Symbolized B1,B2,B3 and B4 and three concentrations of Carbo lizer; 0, 1.25 and 2.5 cm³.L^-1 Which Symbolized C1,C2 and C3. The experiment analysis is carried out in accordance to the experimental with in R

An Experiment carried out in Al-Yarmook Area in Baghdad for the growing season 2014 to study the effects of foliar application of Salicylic acid and Humic acid on Vincristine and NPK content in Catharanthus roseus. A factorial experiment was applied including two factors according to The Complete Randomized Block Design, the first factor included four levels of salicylic acid 0, 25, 50, and 100 mg.L^-1 which were represented with S₀, S₁, S₂, and S₃ sequentially, the second factor included three levels of Humic acid 0, 0.75, and 1.5 ml.L^-1 and were represented with O₀, O₁, and O₂ sequentially to make up 12 factors in total th

The objective of this research was to observe the productivity in kacang goats which were given a complete feed containing flour of various types of banana plant weevils. The material studied in this study was six complete types of feed. Complete feed containing weevil flour from 5 banana plant varieties. Complete feed is prepared with a complete feed composition. The cattle used were 18 male bean goats, mean initial body weight, 15.42 ± 1.98 kg (CV: 13.73%) aged 10-15 months. Livestock is given complete feed containing banana weevil flour for 60 days. The cage is 12 m x 6m in size, construction has a floor platform as high as 140 cm, the enclosure is 1 x 1 m in size and 130 cm in height, equipped with a drinking area. The treat

To examine the effect of different slaughter weights on performance, carcass traits and body composition, twenty five weaned Awassi lambs (19.00 ± 0.12 kg) were divided equally and randomly into five groups. All groups were fed individually ad lib on concentrated diet contained 15.1 % crude protein and 12.2, MJ/kg metabolizable energy. Lambs were slaughtered at five different live weights (20, 25, 30, 35 and 40 kg). Results revealed that daily gain in weight increased from its lowest value (115.7 g) at 20 kg, to (338.8 g) at 30 kg and there after declined to (299.9 g ) in lambs slaughtered at 49 kg. This was associated by a significant decline (P≤0.01) in feed conversion ratio. The daily dry mater intake was increased (P≤0.0

This research was aimed to measure and evaluation the imported inflation in agricultural sector in Iraq. Moreover, studying and analyzing the most important factors affecting it during 1990-2019. This research reached to- via results of unit root test- that all variables were non-stationary at the level, but all of them were stationary at the  difference. The research conclude- through significance of parameters of agricultural trade openness in the model. That the imported inflation can be rising in agricultural sector after the trade liberalization and interring to WTO and increasing of dumping policy in agricultural products, whereas found when measuring the imported inflation the high dependency of agri

The aim of the current study was to determine whether adding zinc to water will improve lamb performance and behavior during a hot climate. In this experiment, twenty seven lambs were housed indoor in individual pens (1.50 x 1.30m). Zinc was added to the fresh drinking water in three different levels namely T₁ (0 mg Zn/day), T₂ (36 mg Zn/day) and T₃ (72 mg Zn/day). Rumination (m/h), feeding time (m/h), number of visiting feeds (n/h), standing time (m/h), lying time (m/h) and standing bouts (n/h) were recorded three times a day by visual observation. Dry matter intake (kg/d), drinking water intake (litter/day), daily live weight gain and feed conversion ratio were also recorded. Th

This study was aimed to synthesize a new molecularly imprinted polymer using a functional monomer of styrene(STY) and allyl chloride(ALC) and N, N-methylene bis-acrylamide (MBAA) as a cross-linker for the selective extraction of cocaine from urine samples. Cocaine is used as a template to create a monolithic solid-phase micro extraction (SPME) fiber. All of these analytical procedures were utilized to extract, preconcentrate, and selectively determine Cocaine and its derivatives (SPME) with gas chromatography and mass spectrometry (GC/MS). Samples taken from a suspected cocaine addict who was given to the medico-legal directorate as a donation (Baghdad, Iraq). The analytes were monitored using UV-Vis , (GC MS), FTIR and Scanning

This study was conducted to compare the semen immediate and microscopic characteristics of the three lines of Holstein bulls. Twenty-one Holstein bulls were divided into three groups belonging to the three lines of Holstein bulls; born in Iraq (Australian origin; n = 8), resulting from embryo transfer technology (New Zealand origin; n = 7), as well as the first generation (F1) resulted from two parents obtained from embryo transfer technology in Iraq (New Zealand origin; n = 6). The ET and L groups showed greater (P≤0.01) ejaculate volume, live sperms percentage, and plasma membrane integrity percentage compared to the F1 group of bulls. Moreover, ET bulls exhibited higher (P≤0.01) sperm concentration than L

This study was aimed to investigate combining ability among maize inbred lines. Randomized complete block design with three replicates was used to study the general combining ability of parents, and specific combining ability of 12 F1s. Combining ability was studied in a partial diallel cross in maize for traits yield and attribute at two locations (Qlyasan and Kanipanka) at Sulaimani Governorate. The cross 3×6 produced the highest value kernels yield and most of the attributed traits as the average of both locations. Mean squares due to crosses, GCA and SCA were highly significant for most traits as the average of both locations. The ratio of σ²gca/ σ²sca was found to be less than one for all traits exce

This study was aimed to investigate the different effects of folic acid and/or saccharomyces cerevisiae on different aspects of Japanese quails. Eighty quail chicks were used, divided into four groups (20 chicks each), the first group was the control, treated with normal ration and drinking water. The second group was treated with saccharomyces cerevisiae 2.5% in the ration, the third group was treated with folic acid (5mg/L. in drinking water), whereas the last group was treated with both folic acid and yeast as stated above. All treatments were for seven weeks, then the birds were sacrificed, and blood was collected to undergo the parameters. Results revealed that the treatment with yeast or folic acid signifi

This study was conducted to elucidate the effect of lowering sunflower cake degradability or seeds on puberty, testicular and blood measurements of Awassi lambs. Thirty Awassi lambs with an average body weight of 25.93 ± 0.42 kg and 3- 4 months old. Lambs were divided into three groups (10 lambs in each group) the first group was fed a diet contained 11% of sunflower cake (T1), the second group was fed a diet contained 11% of low degradable sunflower cake (T2), while the third group fed a diet that contained 11% of low degradable sunflower seeds (T3). The results indicated that reduce sunflower seeds degradability in (T3) led to a significant increase (p≤ 0.05) in the length of right and left testes (8.35 and

This paper introduces enhanced filtered channels in the suggested design of the optical communication system formed for 5G mobile communication over optical fiber. The main goal is to overcome the limited bandwidth of radio wave systems and to enable high-data-rate transmission. The dense wavelength division multiplexing based on the radio-over-fiber (DWDM-RoF) system has succeeded in satisfying a high data rate of 0.64 Tbps by a multichannel filtered system through a 180 km distance within the C-Band through a multichannel filtered approach. The design includes 64 filtered channels with an optimized bandpass filter (BPF), making unprecedented channel convergence possible. The system transmits at low power 0 dBm (1.0 mW)

Noise levels have rapidly increased in recent years, largely due to the proliferation of modern appliances and critical noise sources like engine exhaust mufflers. Controlling muffler-radiated noise could reduce its impact on the surrounding communities. Generally, conventional mufflers utilize expensive sound-absorbing, fibrous, porous materials with high cost and harmful effects. Thus, eco-friendly materials are being used as alternative materials for their lower cost and less effects. The objective of this study is to evaluate natural material fiber's potential as an effective sound absorber in exhaust absorptive mufflers. Also, evaluate an elliptical muffler's performance by studying several factors, including liner

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Ten soil sites were chosen in Iraqi Kurdistan region, included the governorates of (Sulaimani, Arbil, and Duhok). These soils were characterized by their similarity in texture, parent material, topography, climatic conditions, and equal rainfall, in order to study the use of the center of gravity equation and mineralogical properties in evaluating the state of potassium in soils of different plant coverage (Forest, crops, and uncultivated soils). Results showed there was a variation in the values of calculated center of gravity for studied soil samples, which ranged between (0.83 – 1.63). The variation in these values was attributed to the variation between the studied soils in their ability for potassium supplying, depending o

This study was performed for production, purification, characterization and evaluation the antibacterial activity of biosurfactant BS which were produced from local isolate Lactobacillus plantarum Z9 with bacteriocin and studying the synergistic effect .A total 100 different samples 85(%) isolates of Lactobacillus sp. were isolated from different sources and identified by biochemical tests then subjected to the primary and secondary screening processes to select the active isolate for bacteriocin and biosurfactant production. Among the vagina isolates screened, the results found that Lactobacillus sp. Z9 isolated from the clinical samples of Iraqi healthy women had the highest productivity of the bacter

The lack of a sensitive diagnostic test for trypanosomasis in animals may hamper epidemiological data and control program implementation. This study aimed to detection of Trypanosoma evansi in rabbits that experimentally infected by this parasite which identified from camels of iraq by polymerase chain reaction. A study was conducted on 24 males rabbit divided into two groups (12 rabbits for each group). The first group was injected intra peritoneal (i/p) with 0.5 ml containing 1x10⁵ trypanosome. The second group injected with distilled water and considered as control. At 7 and 10 days post infection, blood sample were collected from these rabbits. White blood cells count was conducted after 14 and 28 days pos

Study  was carried out during two successive summer seasons of 2021 and 2022 at private  filed  in El-Salhyia El-Gadida District, Sharkia Governorate, to study response of some potato cultivars to potassium sources as foliar application  under sandy soil conditions using pivot  irrigation system. This experiment included 25 treatments, which were the combinations between five potato cultivars (Spunta , Santana , Cara , Lady  Rosetta  and Hermes) and  four  potassium  sources treatments , i.e. spraying with potassium silicate (KSil , (potassium citrate (KCit), potassium folvate (KF) and potassium thiosulpahte (KTS) as well as control (without spray

Fadak farm project was selected to conduct this study and to evaluate the state of quality and health indices in term of soil physical and biological properties, where this farm is located in Holly Najaf Governorate. Some physical properties (soil texture, mean weight diameter, bulk density, porosity, infiltration rate, saturated hydraulic conductivity and available water) were selected to assess the quality then health indices, and the biological characteristics (vegetation coverage, soil respiration, bacterial and fungal counts) were also selected to assess the quality and health indices in term of these properties. Results showed that classes of moderate and poor soil health were dominated in lands of this farm for each physic

This study was aimed to determine the influence of performing primary tillage by moldboard plow and planting operation by four rows Gaspardo planter on some performance and economic indicators of Armatrac tractor 854e 84 hp (62kw).  The system calculates and measures slippage percentage, draft force, energy requirements, and total costs for planting and tillage operation at three practical velocities and two depths. Planting operation performed at 5 and 7 cm depth under 2.90, 4.27, and 5.28 km.h^-1. while ploughing operation performed at 15 and 20 cm tillage depth under 3.89, 5.28, and 6.67 km.h^-1. Two factorial experiments were carried out using randomized complete block design with two

This paper discusses using H2 and H∞ robust control approaches for designing control systems. These approaches are applied to elementary control system designs, and their respective implementation and pros and cons are introduced. The H∞ control synthesis mainly enforces closed-loop stability, covering some physical constraints and limitations. While noise rejection and disturbance attenuation are more naturally expressed in performance optimization, which can represent the H₂ control synthesis problem. The paper also applies these two methodologies to multi-plant systems to study the stability and performance of the designed controllers. Simulation results show that the H2 controller tracks a desirable cl

The ground level ozone concentration at different locations in Baghdad city was identified. Five
different sites have been chosen to identify the ground level ozone concentration. Al- Dora and Al-
Za'afarania were chosen as areas contained point source ( power plant station ) in addition to high traffic
load , while Al –Uma park, Aden square and Al-Mawal square were chosen as area contained heavy
traffic only (line source). The measurement focuses on spring and fall because these periods display
favorable meteorology to ozone formation. During the research period the maximum values (peaks) for
ground level ozone concentration were observed at fall: at Al-Za'afarania area 101ppb as an average, at
Al-Dora 87 ppb as a

Asphalt pavement properties in Iraq are highly affected by elevated summer air temperatures. One of these properties is stiffness (resilient modulus). To explain the effect of air temperatures on stiffness of asphalt concrete, it is necessary to determine the distribution of temperatures through the pavement asphalt concrete layers. In this study, the distribution of pavement temperatures at three depths (2cm,7cm, 10cm) below the pavement surface is determined by using the temperature data logger instrument. A relationship for determining pavement temperature as related to depth and air temperature has been suggested. To achieve the objective of this thesis, the prepared specimens have been tested for indirect tension in accordance with

Mandali Dam is one of the small dams in Iraq; it is located on Haran Wadi, Gangir, just 3km north-east Mandali City. Mandali dam consists of four main parts, the dam body, the intake structure, the spillway, and the bottom outlet. The dam body is zoned earth filled with a central core.  The main purposes of the dam are to maintain flow of Wadi Haran, supplying irrigation and drinking water to Mandali City, and recharging the groundwater. Over a period of seven years of operation, the dam lost its ability to store water due to accumulated sediments within its reservoir. The accumulated sediment is about 2.25million m³. The average annual rate of reduction during this period is about 0.321

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This study was aimed to investigate the physicochemical structure of fresh and dried Aloe Vera gel (AVG) and its adequacy as a prebiotic in the preparation of Synbiotic fermented milk with Bif. Lactis BB-12, in addition to its effect on the survival of these bacteria during 28 days of cold storage. The results indicated that the yield of the gel was % 64.56±1.157, and the moisture content, total solids (TS) and total soluble solids (TSS) in the fresh gel were % 98.23±0.0816, %1.777±0.0103 and % 1.56±0.0816 respectively. The pH of fresh and dried gel was 4.48±0.0105 and 4.63±0.01, respectively, meanwhile the acidity was 0.083±0.00121 and 0.058±0.0

A field experiment was carried out at University of Baghdad, College of Agricultural Engineering Sciences during fall season of 2020 and spring season of 2021. This study was aimed evaluate the effect of the organic fertilizer and boron foliar on the yield of potatoes for processing. The factorial experiment (5*4) within RCBD and three replicates. The organic fertilizer as palm peat at four levels (0, 12, 24 and 36 ton. ha^-1) in addition to the chemical fertilizer recommendation treatment. Boron at four Concentrations 0, 100, 150 and 200 mg. L^-1 . The results revealed significant different among application of organic fertilizer at the level of 24 ton. ha^-1 and the foliar application of boron at a