Miracle-dz/UniFAR-FTUs huggingface dataset:
Monitoring of pesticide residues in some Egyptian herbs , fruits and vegetables

One hundred thirty two samples of fruits, vegetables, herbs and spices collected from Egyptian local markets were analyzed for pesticide residues. Contamination with pesticide residues reached 54.55% while samples free from contamination reached 45.45%. Only one sample from 132 analyzed samples violated the Maximum Residue Limits (MRLs) of the Codex Committee. From the 132 analyzed samples, 72 samples (54.55%) were contaminated, from which 43.18% contaminated with residues from one pesticide residue, 6.06% with 2 residues and 5.3% with more than 2 residues. In addition, 2 caraway and one fennel samples contained 4 pesticide residues, one sample of marjoram contained 5 pesticide residues and one mint sample contained 6 pesticide residues. Six of the pesticides detected as residues in the analyzed food items were considered to be carcinogens at different levels of assurance.
Electronic structure of ZnTe and CdTe under pressure.

Self-consistent relativistic linear muffin-tin orbital calculations of the band structures are used in conjunction with the local-density approximation to derive equilibrium volumes, bulk moduli, and volume dependences of the energy gaps for ZnTe and CdTe. In addition, the pressure-induced structural phase transition from the zinc-blende (B3) to the NaCl (B1) structure is examined. By means of a ``frozen potential'' method, it is demonstrated that the transition occurs when the electrostatic energy of the NaCl structure is so much larger in magnitude than that of B3 that it can no longer be compensated for by the covalent energy which favors the B3 structure.
A narrow band OFDM

A new orthogonal frequency division multiplexing (OFDM) technology is presented for narrow band. Bit error rate (BER) and power spectral density (PSD) expressions of the method are also derived. It is shown that the BER of the proposed method is the same as that of the binary phase shift key (BPSK) modulation method, which is the lowest among all the modulation methods. Using an example, it is shown that the PSD bandwidth decreases as the number of bits in the symbol increases. A numerical method is described for generation of the waveforms suitable for this OFDM approach. Matlab simulation results are presented to demonstrate the feasibility of the theory.
Role and Function of LitR, an Adenosyl B12-Bound Light-Sensitive Regulator of Bacillus megaterium QM B1551, in Regulation of Carotenoid Production

ABSTRACT The LitR/CarH family of proteins is a light-sensitive MerR family of transcriptional regulators that contain an adenosyl B12 (coenzyme B12 or AdoB12)-binding domain at the C terminus. The genes encoding these proteins are found in phylogenetically diverse bacterial genera; however, the biochemical properties of these proteins from Gram-positive bacteria remain poorly understood. We performed genetic and biochemical analyses of a homolog of the LitR protein from Bacillus megaterium QM B1551, a Gram-positive endospore-forming soil bacterium. Carotenoid production was induced by illumination in this bacterium. In vivo analysis demonstrated that LitR plays a central role in light-inducible carotenoid production and serves as a negative regulator of the light-inducible transcription of crt and litR itself. Biochemical evidence showed that LitR in complex with AdoB12 binds to the promoter regions of litR and the crt operon in a light-sensitive manner. In vitro transcription experiments demonstrated that AdoB12-LitR inhibited the specific transcription of the crt promoter generated by a σA-containing RNA polymerase holoenzyme under dark conditions. Collectively, these data indicate that the AdoB12-LitR complex serves as a photoreceptor with DNA-binding activity in B. megaterium QM B1551 and that its function as a transcriptional repressor is fundamental to the light-induced carotenoid production. IMPORTANCE Members of the LitR/CarH family are AdoB12-based photosensors involved in light-inducible carotenoid production in nonphototrophic Gram-negative bacteria. Our study revealed that Bacillus LitR in complex with AdoB12 also serves as a transcriptional regulator with a photosensory function, which indicates that the LitR/CarH family is generally involved in the light-inducible carotenoid production of nonphototrophic bacteria.
High-Performance Circularly Polarized Antenna Array Using Metamaterial-Line Based Feed Network

This communication presents a 2 × 2 circularly polarized (CP) antenna array composed of H-shaped patches. The uniqueness of this CP array is its feeding network, where state-of-the-art metamaterial transmission lines (MMLs) are built to obtain the required quadrature phases. Experimental results show that the feed network has excellent power distribution and progressive phases over a wide bandwidth. As a consequence, the MML-based array exhibits excellent performance, viz. 85% impedance bandwidth (SWR ≤ 2), 89% axial-ratio (3-dB) bandwidth, 80% efficiency at a center frequency of 2.5 GHz and 55% pattern bandwidth with a criterion of 8-dBic gain level. The axial-ratio bandwidth is validated with cross-polar discriminations obtained from radiation patterns.
Extracellular matrix tenascin‐X in combination with vascular endothelial growth factor B enhances endothelial cell proliferation

An extracellular matrix tenascin‐X (TNX) is highly expressed in muscular tissues, especially heart and skeletal muscle, and is also prominent around blood vessels. The precise in vivo role of TNX remains to be elucidated. To identify proteins that interact with TNX in the extracellular environment, we searched for TNX‐binding proteins using a yeast two‐hybrid system.
articleDecrease in the expression of the type 1 PTH / PTHrP receptor ( PTH 1 R ) on chondrocytes in animals with osteoarthritis

Background: To evaluate the expression of the type 1 PTH/PTHrP receptor (PTH1R) on chondrocytes from hyaline cartilage over the course of osteoarthritis (OA). Methods: In 12 NZW rabbits, the anterior cruciate ligament (ACL) was resected to create anterior instability of the knee. In 12 control rabbits, only a sham operation, without resection of the ACL, was performed. Four animals from each group were killed at 3, 6, and 12 weeks. After opening the knee joint, OA was macroscopically graded and hyaline cartilage of the load-bearing area was evaluated histologically according to the Mankin scale and by immunostaining
Immunogenicity and safety of an inactivated hepatitis a vaccine in anti‐HIV positive and negative homosexual men

The immunogenicity, reactogenicity, and safety of an inactivated hepatitis A vaccine were assessed in anti‐HIV positive homosexual men. Fourteen anti‐HIV positive (group 1) and 20 anti‐HIV negative (group 2) men received vaccine (containing 720 ELISA units of hepatitis A antigen per dose) intramuscularly at 0, 1, and 6 months. Twelve unvaccinated anti‐HIV positive men (group 3) were included as controls to evaluate disease progression.
Soluble mediators of t‐b interaction

Supernatants of antigen‐activated T cells (ATC) were tested for their B cell‐activating potential in T cell‐deprived mouse lymphocyte cultures. Antigenic stimulation of ATC induced the simultaneous release of antigen‐specific and nonspecific factors. The effect of the nonspecific supernatant factor was restricted to the potentiation of antibody responses against fully or partially T‐independent antigens (dinitrophenylated aminoethyl dextran or heterologous erythrocytes, respectively). Expression of the nonspecific activity depended on a macrophage function, which could be replaced by 2‐mercaptoethanol, whereas the specific factor required the physical presence of the macrophage.
Acute Effects of Passive Static Stretching During Warm-up on Driver Clubhead Speed, Distance, Accuracy, and Consistent Ball Contact in Young Male Competitive Golfers

Gergley, JC. Acute effects of passive static stretching during warm-up on driver clubhead speed, distance, accuracy, and consistent ball contact in young male competitive golfers. J Strength Cond Res 23(3): 863-867, 2009-This investigation was conducted to determine the effect of 2 different warm-up treatments on clubhead speed, distance, accuracy, and consistent ball contact in 15 young male competitive golfers. Two supervised warm-up treatments, an active dynamic warm-up with golf clubs (AD) and a 20-minute total-body passive static stretching routine plus an identical AD warm-up (SS), were applied before each performance testing session using a counterbalanced design on nonconsecutive days. Immediately after each warm-up treatment, subjects were instructed to hit 10 full-swing golf shots with their driver after their normal preshot routine, with 1 minute of rest between trials. Significant (p < 0.05) decreases in clubhead speed (−4.19%), distance (−5.62%), accuracy (−31.04%), and consistent ball contact (−16.34%) were observed. Theoretical explanations for this acute decrease in performance include a more compliant muscle tendon unit, decreased neuromuscular reflex sensitivity, and neural inhibition attributable to the SS treatment. The results of this inquiry strongly suggest that a total-body passive static stretching routine should be avoided before practice or competition in favor of a gradual, active dynamic with golf clubs.
DRAM Data Retention and Cell Transistor Threshold Voltage Reliability Improved by Passivation Annealing Prior to the Deposition of Plasma Nitride Layer

We report, for the first time, that the fail bit counts of dynamic random access memory (DRAM) reduced by 18% and the yield loss after packaging induced by data retention degradation decreased by 1.16% for a trench DRAM cell; this reduction was attributed to a change in the process position of passivation annealing. Moreover, the cell transistor threshold voltage (CTVth) shift was reduced to 53 mV, and the uniformity of the CTVth was improved from 100 to 38 mV; this provided the DRAM cell with a large margin for further reducing both the dose of the threshold implant and the electrical field. We proposed a possible mechanism of carrying out passivation annealing prior to the deposition of a plasma nitride layer in order to increase the supply of hydrogen for the passivation of the crystalline defects as well as improving data retention. The CTVth was increased by breaking of weak Si-H bonds by plasma charging during the deposition of the plasma nitride layer. Data retention degradation after the packaging process ( ~ 250°C) reduced because of the presence of a number of strong Si-H bonds, indicating the presence of a greater number of interface trap states near the storage trench than near the bit line, as observed in the case when hot-carrier stress was applied under two conditions. Results of data retention analysis show that the fail bit counts are primarily influenced by the junction leakage current and not the gate-induced drain leakage current. Above observation is dependent on device process flow, which provided us an easy way for DRAM device optimization and maximized manufacturing process window.
An LMI approach to robust fault estimation for a class of nonlinear systems

The paper presents a robust fault estimation approach for a class of nonlinear discrete‐time systems. In particular, two sources of uncertainty are present in the considered class of systems, that is, an unknown input and an exogenous external disturbance. Thus, apart from simultaneous state and fault estimation, the objective is to decouple the effect of an unknown input while minimizing the influence of the exogenous external disturbance within the ℋ∞ framework. The resulting design procedure guarantees that a prescribed disturbance attenuation level is achieved with respect to the state and fault estimation error while assuring the convergence of the observer. The core advantage of the proposed approach is its simplicity by reducing the fault estimation problem to matrix inequalities formulation. In addition, the design conditions ensure the convergence of the observer with guaranteed ℋ∞ performance. The effectiveness of the proposed approach is demonstrated by its application to a twin rotor multiple‐input multiple‐output system. Copyright © 2015 John Wiley & Sons, Ltd.
Blood‐brain barrier abnormalities in acquired immunodeficiency syndrome: Immunohistochemical localization of serum proteins in postmortem brain

Abnormalities in the blood‐brain barrier (BBB) may be important in mediating some of the tissue damage that accompanies human immunodeficiency virus (HIV) infection of the brain, as well as in facilitating viral entry into the central nervous system. Accordingly, immunohistochemical detection of fibrinogen (FIB) and immunoglobulin G (IgG) was used as a marker of vascular permeability in formalin‐fixed, paraffin‐embedded brains of patients with acquired immunodeficiency syndrome (AIDS) who had HIV encephalitis (HIVE) (n = 17) and those who did not have HIVE (n = 16); nonimmunosuppressed patients served as control subjects (n = 22). The sex ratios and postmortem intervals were similar in all groups (p < 0.05), but the age of the two AIDS groups were younger than the control group (43.2 and 40.9 versus 62.5 yr; p < 0.05). The two AIDS groups had higher immunostaining for FIB and IgG than the control group (p < 0.001 and p < 0.0001, respectively) but did not differ from one another. Furthermore, the two AIDS groups had a significantly higher incidence of combined extravasation of both FIB and IgG, whereas the control group had a significantly higher incidence of negative staining for both proteins (p < 0.002). More than 95% of the microglial nodules of HIV were negative for serum proteins; however, all focal lesions with tissue necrosis, including lymphoma, opportunistic infections, and HIV (rarely), contained extravasated serum proteins. These results indicate that a diffuse BBB leak is present in approximately 50% of all patients with AIDS at the time of autopsy and may be seen in the absence of any other brain pathology, including HIVE. In contrast, focal lesions, including those of HIVE, are associated with BBB changes only when necrosis is present. The pathogenesis of the diffuse leak is unknown but may be related to circulating cytokines. Diffuse BBB breakdown may contribute not only to facilitated viral entry into brain, but also to the diffuse myelin pallor and gliosis common to all patients with AIDS.
Male odor accelerates female sexual maturation in mice.

Previous work has shown that sexual maturation of female mice is accelerated by the presence of a male. This report identifies male odor as a critical stimulatory masculine agent. Groups of females in contact with 1) an adult male, 2) with a male behind a wire mesh barrier, or 3) the odor of a male display vaginal opening and first estrus about 15 days earlier than females exposed to a castrate male, forced activity, or no male influences. The data alsosuggest that odors derived from males exposed to estrous females are more effective than odorsfrom solitary males in accelerating sexual maturation. (Endocrinology84: 658, 1969)
Thyroid Metabolic Hormones and its Correlation with BMI and Lipid Profile in Healthy People

Background :Thyroid hormone play an important role in basal lipid metabolism.It is well known that alteration in thyroid function can result in changes in the composition and in the transport of lipoprotein.This study aimed to study the effects of thyroid hormone on serum lipids and evaluted the correlation between thyroid hormone with Body Mass Index(BMI) and lipid profile of healthy people. Methods: Total of 56 healthy people(28 male:28 female) ,aged 30-60 years included in this study.About 5ml of fasting blood (8-12 h.) was collected from each individual.To determine serum Thyroid stimulating hormone (TSH), Triiodothyronine (T3) and Thyroxine (T4) and the quantitative sandwich enzyme immunoassay technique were used.Lipid profile were measured by an enzymatic colorimetric(GPO-POD) method. Results: The result of the present study showed that the levels of triglyceride was significantly higher (p< 0.05) in males than females ,while the levels of triiodothyronine was significantly higher(p< 0.05) in females than males of healthy people.Correlation analysis in healthy males showed positive correlation among BMI with lipid profile,while an inverse correlation between TSH and T4,also an inverse correlation between T3 and HDL . In healthy females there was positive correlation among T3 with BMI and WC,also between T4 and LDL ,while an inverse correlation between TSH and VLDL. Conclusions: Thyroid metabolic hormone especially T3 regulate the resting metabolic rate and the mild thyroid dysfunction was linked to significantly changes in body weight ,lipid profile and likely represents risk factor for healthy and obesity. Keywords :Thyroid metabolic hormone,lipid profile,BMI ,healthy people
Treatment of Patients with Lipid Disorders in the Primary Care Setting: New Treatment Guidelines and their Implications

Coronary heart disease (CHD) remains a major cause of morbidity and mortality throughout North America. The role played by lipid abnormalities is now well established, and primary care physicians can play a major role in reversing the increasing prevalence of CHD by following the recommended guidelines of the National Cholesterol Expert Panel (NCEP ATP-III). While many physicians are aware of the importance of lowering lipid levels, a large number of patients still fail to reach their treatment goals. It is therefore important to identify patients at risk of developing coronary events due to abnormal lipid profiles and to quickly implement effective prevention programs. Although diet and other lifestyle modifications should form the basis of lipid management, the addition of lipid-modifying drugs is often necessary. Several lipid-modifying agents are available, but the proven efficacy and good tolerability of statins has increasingly made them the drugs of choice.
Phosphaturic mesenchymal tumor diagnosed by fine‐needle aspiration and core biopsy: A case report and review of literature

Oncogenic (tumor‐induced) osteomalacia is a rare paraneoplastic syndrome of phosphate wasting that is frequently associated with phosphaturic mesenchymal tumor (PMT). As the cytologic features of this tumor apparently have not been reported, we describe the fine‐needle aspiration (FNA) findings for PMT that arose from the gluteal soft tissue in a patient with hypophosphatemia and multiple fractures secondary to osteomalacia. Smears from the computerized tomography (CT)‐guided FNA showed groups of spindle cells having elongated nuclei, fine to moderately coarsely granular chromatin, inconspicuous nucleoli, and delicate cytoplasm. Marked nuclear atypia, mitotic figures, and necrosis were absent. The differential diagnosis included a variety of benign and malignant spindle cell neoplasms such as monophasic synovial sarcoma, leiomyoma, peripheral nerve sheath tumor, fibrosarcoma, and, less likely, metastatic melanoma and sarcomatoid carcinoma. The bland‐appearing cytologic features of a spindle cell tumor in a patient with osteomalacia should suggest the diagnosis of PMT. Diagn. Cytopathol. 2008;36:115–119. © 2008 Wiley‐Liss, Inc.
Infections caused by Mycobacterium avium complex in immunocompromised patients: diagnosis by blood culture and fecal examination, antimicrobial susceptibility tests, and morphological and seroagglutination characteristics

The Mycobacterium avium complex, only rarely described as an invasive pathogen in humans, has recently been reported to frequently cause disseminated disease in patients with the acquired immune deficiency syndrome. Between February 1981 and February 1984 at Memorial Sloan-Kettering Cancer Center, 30 patients with acquired immune deficiency syndrome, 3 patients with leukemia, and 2 patients with congenital severe combined immunodeficiency syndrome developed disseminated M. avium complex infection. Mycobacteria were often found in multiple sites both antemortem and postmortem. Blood cultures were a reliable method for detecting disseminated infection, and the new lysis blood culture systems provided an efficient technique for determining the number of organisms per milliliter of blood. Acid-fast stains and cultures of fecal specimens were also helpful in diagnosing infection. Most of the mycobacteria were serovar 4 (77%), and most (86%) produced a deep yellow pigment. All isolates were susceptible to standard concentrations of clofazimine, cycloserine, and ansamycin, but tended to be resistant to isoniazid, streptomycin, ethambutol, ethionamide, and rifampin.
Neonatal bacteremia and retinopathy of prematurity: the ELGAN study.

OBJECTIVE To explore whether early or late and presumed or definite neonatal bacteremia are associated with an increased risk of severe retinopathy of prematurity (ROP). METHODS We evaluated 1059 infants born before week 28 of gestation for ROP. Infants were classified as having early (postnatal week 1) or late (weeks 2-4) definite (culture-proven) or presumed (antibiotics taken for >72 hours despite negative blood culture results) bacteremia. Severe ROP was defined as stage 3 to 5, zone 1, prethreshold/threshold, or plus disease. We used time-oriented risk models to adjust for confounders. RESULTS In univariable, but not multivariable, analysis, newborns with presumed early bacteremia were at increased risk for plus disease (odds ratio [OR], 1.7; 95% CI, 1.1-2.7), and those with definite early bacteremia were at increased risk for stage 3 to 5 disease (1.9; 1.1-3.2). Infants who had presumed or definite late bacteremia were at increased risk for all 4 indicators of severe ROP in univariable analysis. In multivariable analysis, newborns with presumed late bacteremia were at increased risk for prethreshold/threshold ROP (OR, 1.8; 95% CI, 1.02-3.2), and those with definite late bacteremia were at increased risk for prethreshold/threshold ROP (1.8; 1.1-2.9) and plus disease (1.8; 1.05-2.9). CONCLUSIONS Definite late neonatal bacteremia seems to be an independent risk factor for prethreshold/threshold ROP and plus disease, and presumed late bacteremia seems to be related to prethreshold/threshold ROP.
Agglomeration and the spatial distribution of creativity

This article analyses the spatial distribution of "creativity" - the pro- duction of new knowledge. We analyse commercial patents granted in Sweden between 1994 and 2001 using a panel of 100 labour market areas that encompass the entire country. We relate patent activity to measures of localisation and urban- isation, to the industrial composition and size distribution of firms, and to the regional distribution of human capital. Our analysis confirms the importance of human capital and research facilities in stimulating regional patent output. Our results document the importance of agglomeration and spatial factors in influ- encing creativity: patent activity is increased in larger and more dense labour markets and in regions in which a larger fraction of the labour force is employed in medium-sized firms. Our results also indicate that creativity is greater in labour markets with more diverse employment bases and in those which contain a larger share of national employment in certain industries, thus confirming the impor- tance of urbanisation and localisation economies in stimulating creativity. Our quantitative results suggest that the urbanisation of Sweden during the 1990s had an important effect upon the aggregate level of patent activity in the country, leading to increases of up to 15 percent in aggregate patents.