332 research outputs found

    Atrial tachycardia associated with a tachycardia-induced cardiomyopathy in a patient with systemic lupus erythematosus

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    Systemic lupus erythematosus (SLE) is an autoimmune disease that involves multiple organ systems. Cardiovascular involvement in SLE is well described in the literature. Cardiac arrhythmias associated with SLE include sinus tachycardia, atrial fibrillation, and atrial ectopy or atrial tachycardia. In this report, we present the case of a patient with SLE who was found to have focal atrial tachycardia that mimicked sinus tachycardia on a 12-lead electrocardiogram (ECG). She was inappropriately treated as a case of sinus tachycardia initially. But she did not respond to the treatment and developed tachycardia-induced cardiomyopathy despite being on antiarrhythmic medications. She subsequently underwent successful radiofrequency catheter ablation and her left ventricular ejection fraction (LVEF) recovered within three months after the ablation

    Effect of Heat Stress on Cattle: A Review

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    Heat stress in livestock animals is one of the promising topics discussed especially with climate change. Even though it is complicated to accurately measure at which point the cattle may suffer from heat stress due to different external and internal factors, mitigation of heat stress is quite important because a cow can lead to hyperthermia if it couldn’t maintain the thermoneutrality of its body. A great number of researches were conducted to find out the factors that lead to heat stress and the effects of heat stress on the production, reproduction, respiratory rates, heart rate, and feeding behaviors of cattle. Mitigation strategies for heat stress were also revealed under different means by mitigating heat exchange pathways which lead to accumulate the heat within the body, and management strategies including nutritional management.  The present review was to elaborate on those findings to critically evaluate how dairy cattle are affected by heat stress in the livestock industry and the investigated mitigation strategies of heat stress to regulate the body heat of cattle

    Внедрение и принцип работы системы сейсмического мониторинга горного массива для работы в условиях ООО "Шахта "Усковская"

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    The status of the Silicon Microvertex Detector (SMD) and its installation into the LEP-L3 experiment are presented, highlighting novel features and sophisticated techniques. Preliminary results based on 1993 data are given and compared with Monte Carlo predictions, to understand the detector performances and its tracking capabilities

    Automatic Solar Battery Charging System with Grid Backup

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    The increasing demand for sustainable and uninterrupted power supply has driven advancements in hybrid energy systems. This paper presents the design and implementation of an Arduino-based intelligent power switching and monitoring system for solar and grid hybrid energy sources. The system utilizes a solar panel to charge a battery through a charge controller, while also integrating grid power as a backup. A voltage sensor is used to monitor the battery level, and an Arduino microcontroller is employed to control a relay module, which intelligently switches the load between solar and grid power based on predefined thresholds. The LCD module displays real-time system status, enhancing user interaction. Additionally, a battery charge adaptor is included to ensure backup charging when solar input is insufficient. This system optimizes the use of renewable energy while maintaining uninterrupted power supply to the load, making it ideal for smart homes, rural electrification, and energy-efficient applications. Experimental results demonstrate reliable switching behavior and effective power utilization, validating the system’s practical viability

    Characterization of cowpea to harvest rainwater for wheat in semiarid conditions

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    Aim of study: A field experiment was executed, under rainfed conditions from 2014-15 to 2017-18, to study the role of cowpea (Vigna unguiculata L.) in rainwater harvesting to enhance the wheat (Triticum aestivum L.) yield.Area of study: Rain-fed area of Pothwar region, Punjab, Pakistan.Material and methods: We designed three treatments (T1: control; T2: cowpea grown after conventional tillage and incorporated into soil to act as “green manure”; and T3: grown without any tillage practice, cut with sickle and spread as “mulch”). The effect of these treatments on soil moisture conservation was studied against conventional farmer’s practice, wherein no host crop is grown before wheat sowing.Main results: Available soil water remained highest in T2 during first three years when sufficient rainfall was received contrary to fourth year with low rainfall. The results revealed that cowpea biomass of 15.2 t/ha and 13.72 t/ha, from T2 and T3 respectively, were produced during 2015 corresponding to 213 mm rainfall. Whereas, these quantities increased to 25.69 t/ha and 24.29 t/ha during 2017 with 387 mm of rainfall. The study revealed that net income from wheat crop under T2 was Rs 13000 and Rs 9000 per hectare higher than that of control during the first two years respectively. Contrarily, net income from T2 was found negative and benefit-cost ratio reduced to 0.79 when very low rainfall was received during the last year.Research highlights: Use of cowpea as green manure gave maximum net return if sufficient rainfall is received during decomposition of cowpea and hence recommended for in-situ rainwater harvesting

    5\u27-nucleotidase, oxidative stress and antioxidant status in alcohol consumers and cirrhotic patients

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    Uvod: Cilj istraživanja bio je izmjeriti aktivnost enzima 5\u27-nukleotidaza kod bolesnika s cirozom jetre i osoba koje uzimaju alkohol. U istraživanju se ispitivao i oksidacijski stres, antioksidansi te njihova povezanost s 5\u27-nukleotidazom. Materijali i metode: Istraživanje je provedeno u tri skupine po 25 ispitanika jednake dobi i spola: I. skupina (kontrolni ispitanici), II. skupina (osobe koje uzimaju alkohol, tj. konzumenti alkohola) i III. skupina (bolesnici s cirozom jetre). Uzorci krvi prikupljeni od ispitanika centrifugirani su kako bi se odvojila plazma za analizu 5\u27-nukleotidaze. Odvojene stanice su tri puta isprane 0,9-postotnom hladnom fiziološkom otopinom i upotrebljene za analizu glutationa, malondialdehida i superoksid-dismutaze. Rezultati: Aktivnost 5\u27-nukleotidaze u serumu bila je statistički značajno povišena kod skupine bolesnika s cirozom i skupine konzumenata alkohola. Koncentracije malondialdehida bile su također statistički značajno povišene kod bolesnika s cirozom jetre i konzumenata alkohola. Koncentracije glutationa i superoksid-dismutaze bile su statistički značajno snižene u obje skupine. Zaključak: Iz ovih rezultata može se zaključiti da je aktivnost 5\u27-nukleotidaze u serumu dosljedno viša kod bolesnika s cirozom jetre i osoba koje uzimaju alkohol. Zapažena razlika mogla bi ukazivati na opseg oštećenja jetre, oštećenja hepatobilijarnog sustava i opstrukcije jetre.Background: The present study was undertaken to determine the 5\u27-nucleotidase enzyme activity in liver cirrhotic patients and alcohol consumers. Oxidative stress, antioxidants and their association with 5\u27-nucleotidase were also investigated. Methods: The study included three groups of 25 age and sex matched subjects: group I (control), group II (alcohol consumers) and group III (cirrhotic patients). Blood samples were collected and centrifuged for separation of plasma for analysis of 5\u27-nucleotidase. Separated cells were washed thrice with 0.9% w/v cold normal saline and used for the analysis of glutathione, malondialdehyde and superoxide dismutase. Results: The activity of serum 5\u27-nucleotidase was significantly increased in both cirrhotic patients and alcohol consumers. The levels of malondialdehyde were also significantly increased in both cirrhotic patients and alcohol consumers. The levels of glutathione and superoxide dismutase were significantly decreased in both cirrhotic patients and alcohol consumers. Conclusions: Study results indicated the activity of serum 5\u27-nucleotidase to be consistently higher in cirrhotic patients and alcohol consumers. The difference recorded might be pointing to the extent of liver damage, hepatobiliary damage, and biliary stasis

    Foliar applied zinc on different growth stages to improves the growth, yield, quality and kernel bio-fortification of fine rice

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    Zinc (Zn) is an essential needed for the growth and development of plants, however, Zn is continuously increasing in our soils which is decreasing crop production. Further, the crops grown on Zn-deficient soils also contains a low amount of Zn which is also a major reason for Zn deficiency in humans. So, it is mandatory to supply the Zn to fulfil the crop needs with a corresponding increase in grain Zn. Therefore, the present study was performed to determine the impact of different rates of foliar applied Zn at different growth stages on the growth, yield, quality, and Zn bio-fortification of fine rice. The study comprised foliar application of distilled water (control), foliar applied Zn @ 0.5% at stem elongation stage + booting stage, foliar applied Zn @ 1.0% at stem elongation stage + booting stage, foliar applied Zn @ 0.5% at booting stage and milking stage, foliar applied Zn @ 1.0% at booting stage and milking stage, foliar applied Zn @ 0.5% at milking stage + dough stage and applied Zn @ 1.0% at milking stage + dough stage. The results indicated Zn applied different growth stages significantly improved, productivity and Zn bio-fortification of rice crop. The maximum LAI, LAD, CGR, fertile tillers, 1000 KW, kernel yield, biomass yield, HI, chlorophyll concentration, relative water content (RWC), and antioxidant activities were observed with foliar applied Zn (0.5%) at booting and milking stage and lowest values of all these traits were observed in control. Likewise, the maximum kernel protein, amylose, kernel length and width, and grain Zn concentration was Zn (0.5%) at the booting and milking stage, and minimum kernel protein, amylose, kernel length, and width, and grain Zn concentration was noted in control. The current study findings suggested that foliar-applied Zn (0.5%) at the booting and milking stage could be an important practice to get better productivity, quality, and grain Zn bio-fortification of rice in semi-arid conditions
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