Photovoltaic (PV) fault detection is crucial because undetected PV faults can lead to significant... more Photovoltaic (PV) fault detection is crucial because undetected PV faults can lead to significant energy losses, with some cases experiencing losses of up to 10%. The efficiency of PV systems depends upon the reliable detection and diagnosis of faults. The integration of Artificial Intelligence (AI) techniques has been a growing trend in addressing these issues. The goal of this systematic review is to offer a comprehensive overview of the recent advancements in AI-based methodologies for PV fault detection, consolidating the key findings from 31 research papers. An initial pool of 142 papers were identified, from which 31 were selected for in-depth review following the PRISMA guidelines. The title, objective, methods, and findings of each paper were analyzed, with a focus on machine learning (ML) and deep learning (DL) approaches. ML and DL are particularly suitable for PV fault detection because of their capacity to process and analyze large amounts of data to identify complex pat...
OnkoNetwork is a patient navigation program established in the Moritz Kaposi General Hospital to ... more OnkoNetwork is a patient navigation program established in the Moritz Kaposi General Hospital to improve the timeliness and completeness of cancer investigations and treatment. The H2020 SELFIE consortium selected OnkoNetwork as a promising integrated care initiative in Hungary and conducted a multicriteria decision analysis based on health, patient experience, and cost outcomes. In this paper, a more detailed analysis of clinical impacts is provided in the largest subgroup, non-small cell lung cancer (NSCLC) patients. A retrospective cohort study was conducted, enrolling new cancer suspect patients with subsequently confirmed NSCLC in two annual periods, before and after OnkoNetwork implementation (control and intervention cohorts, respectively). To control for selection bias and confounding, baseline balance was improved via propensity score weighting. Overall survival was analyzed in univariate and multivariate weighted Cox regression models and the effect was further characteriz...
We demonstrate a high-efficiency graphene/Si Schottky junction solar cell with an easy to fabrica... more We demonstrate a high-efficiency graphene/Si Schottky junction solar cell with an easy to fabricate graphene back-contact structure and effective chemical treatments. This device effectively overcame the current challenges associated with reported graphene/Si Schottky solar cell structures. The short-circuit current density for such a device is increased by around 20% due to the increase of the active area of this device, compared to previous graphene/Si Schottky junction solar cell devices. The undesirable s-shaped kink in J-V curves, as found in previous works, have been eliminated by using Formamide treatment for 30 min prior to an annealing process in the forming gas. The fill factor of this device is improved by 40% after this treatment, due to the effective removal of the unwanted PMMA residue. Moreover, volatile oxidant vapour and anti-reflection coating are applied within the fabrication process for this device to further improve solar cell performance. An efficiency of 9.5% has successfully been achieved for the fabricated device using the fabrication techniques developed in this work. Our device presents a viable and achievable approach to preparing low-cost and high-performance graphene/Si Schottky junction solar cells.
Background: The Norwegian Coordination Reform (CR) in 2012 introduced new economic incentives aim... more Background: The Norwegian Coordination Reform (CR) in 2012 introduced new economic incentives aimed at weaknesses in interaction between primary care, social care and specialist care. This paper studies the association of a new co-payment scheme on the 30-day and 90-day survival probabilities for chronic and multimorbidity patients. We also analyse whether admission types ⸺ planned or emergency ⸺ matters for survival rates, and the importance of patient pathways. Several different pathways are possible, depending on where patients came from before being admitted to hospital and their destination after discharge from hospital. Methods: The study uses data from three different registers for the period 2010 to 2013. We consider 30 common chronic conditions for which administrative data are available (n=563,096 in-patient episodes). We look at three mutually exclusive pathways. They are relevant and important in terms of the number of patients depending on co-operation and co-ordination...
Background: The effect of zinc supplementation on birth weight, litter size, total erythrocyte co... more Background: The effect of zinc supplementation on birth weight, litter size, total erythrocyte count (TEC), hemoglobin estimation, total leukocyte count (TLC), blood glucose level, abnormal sperm count and histopathology of testis in mice was evaluated. Methods: 45 albino mice were randomly divided into 3 equal groups viz. control group, A; 10 mg zinc/kg feed treated group, B; 20 mg zinc/kg feed treated group, C. Each group was comprised of 10 male mice and 5 female mice. Then they are allowed to breed for about 25 days. After breeding males were withdrawn from each group and treated with zinc for 30 days. Then male mice were transferred back to female cage and were allowed to breed for 25 days. Results: Mice of group B and C showed a significant increase (p<0.01) in total erythrocyte count (TEC), total leukocyte count (TLC), hemoglobin content, litter size and decreased abnormal sperm count. No significant increase in body weight, even a decrease in glucose content was recorded ...
ABSTRACTThe mechanism of protection against cholera afforded by previous illness or vaccination i... more ABSTRACTThe mechanism of protection against cholera afforded by previous illness or vaccination is currently unknown. We have recently shown that antibodies targeting O-specific polysaccharide (OSP) of Vibrio cholerae correlate highly with protection against cholera. V. cholerae is highly motile and possesses a flagellum sheathed in O-specific polysaccharide (OSP), and motility of V. cholerae correlates with virulence. Using high speed video microscopy, and building upon previous animal-related work, we demonstrate that sera, polyclonal antibody fractions, and OSP-specific monoclonal antibodies recovered from humans surviving cholera block V. cholerae motility at both subagglutinating and agglutinating concentrations. This anti-motility effect is reversed by pre-adsorbing sera and polyclonal antibody fractions with purified OSP; and is associated with OSP-specific but not flagellin-specific monoclonal antibodies. F[ab] fragments of OSP-specific polyclonal antibodies do not inhibit m...
Introduction: Alcaligenes faecalis is a common environmental bacterium that often infects human a... more Introduction: Alcaligenes faecalis is a common environmental bacterium that often infects human as an opportunistic pathogen. It rarely causes Urinary Tract Infection (UTI) in human; however, infection brings severe outcomes. Also, the treatment of A. faecalis associated infections with common antibiotics can be difficult due to a high level of antibiotic resistance.
Background: Bisphenol-A [BPA, 2, 2-bis (hydroxyphenyl) propane] is widely used in the manufacture... more Background: Bisphenol-A [BPA, 2, 2-bis (hydroxyphenyl) propane] is widely used in the manufacture of polycarbonate plastic, water bottles, feeders , baby bottles, epoxy resins and inside coating in metallic food cans. Black seed oil (BSO) (Nigella sativa) commonly known as black cumin, reported to be beneficial in function of various systems in the body. The study was carried out to investigate the effect of BPA and BSO on body weight, lipid profile and serum glucose in male and female mice. Methods : A total of thirty (15 male and 15 female) Swiss Albino mice (Mus musculus), aged 25-28 days with an average body weight of 27.4±1g were randomly divided into 3 groups consisting 5 mice in each for each sex. Group A served as vehicle control. Group B was administered BPA @ 50 mg/kg bw daily, while group C received both BPA @ 50 mg/kg/day and BSO @ 1ml/kg/day respectively. Results: Data revealed that BPA treated mice showed slight increase in body weight gain while BSO controlled the wei...
Background: Comprehensive assessment of integrated care deployment constitutes a major challenge ... more Background: Comprehensive assessment of integrated care deployment constitutes a major challenge to ensure quality, sustainability and transferability of both healthcare policies and services in the transition toward a coordinated service delivery scenario. To this end, the manuscript articulates four different protocols aiming at assessing large-scale implementation of integrated care, which are being developed within the umbrella of the regional project Nextcare (2016-2019), undertaken to foster innovation in technologically-supported services for chronic multimorbid patients in Catalonia (ES) (7.5 M inhabitants). Whereas one of the assessment protocols is designed to evaluate population-based deployment of care coordination at regional level during the period 2011-2017, the other three are service-based protocols addressing: i) Home hospitalization; ii) Prehabilitation for major surgery; and, iii) Community-based interventions for frail elderly chronic patients. All three services have demonstrated efficacy and potential for health value generation. They reflect different implementation maturity levels. While full coverage of the entire urban health district of Barcelona-Esquerra (520 k inhabitants) is the main aim of home hospitalization, demonstration of sustainability at Hospital Clinic of Barcelona constitutes the core goal of the prehabilitation service. Likewise, full coverage of integrated care services addressed to frail chronic patients is aimed at the city of Badalona (216 k inhabitants). Methods: The population-based analysis, as well as the three service-based protocols, follow observational and experimental study designs using a non-randomized intervention group (integrated care) compared with a control group (usual care) with a propensity score matching method. Evaluation of cost-effectiveness of the interventions using a Quadruple aim approach is a central outcome in all protocols. Moreover, multi-criteria decision analysis is explored as an innovative method for health delivery assessment. The following additional dimensions will also be addressed: i) Determinants of sustainability and scalability of the services; ii) Assessment of the technological support; iii) Enhanced health risk assessment; and, iv) Factors modulating service transferability.
Evaluation of integrated care programmes for individuals with multi-morbidity requires a broader ... more Evaluation of integrated care programmes for individuals with multi-morbidity requires a broader evaluation framework and a broader definition of added value than is common in cost-utility analysis. This is possible through the use of Multi-Criteria Decision Analysis (MCDA). This paper presents the seven steps of an MCDA to evaluate 17 different integrated care programmes for individuals with multi-morbidity in 8 European countries participating in the 4-year, EU-funded SELFIE project. In step one, qualitative research was undertaken to better understand the decision-context of these programmes. The programmes faced decisions related to their sustainability in terms of reimbursement, continuation, extension, and/or wider implementation. In step two, a uniform set of decision criteria was defined in terms of outcomes measured across the 17 programmes: physical functioning, psychological well-being, social relationships and participation, enjoyment of life, resilience, person-centered...
Clusterin (CLU) has been associated with the clinical progression of Alzheimer's disease (AD)... more Clusterin (CLU) has been associated with the clinical progression of Alzheimer's disease (AD) and described as a potential AD biomarker in blood plasma. Due to the enormous attention given to cerebrospinal fluid (CSF) biomarkers for the past couple of decades, recently found blood-based AD biomarkers like CLU have not yet been reported for biosensors. Herein, we report the electrochemical detection of CLU for the first time using a screen-printed carbon electrode (SPCE) modified with 1-pyrenebutyric acid-hydroxysuccinimide ester (Pyr-NHS) and decorated with specific anti-CLU antibody fragments. This bifunctional linker molecule contains succinylimide ester to bind protein at one end while its pyrene moiety attaches to the carbon surface by means of π-π stacking. Cyclic voltammetric and square wave voltammetric studies showed the limit of detection down to 1 pg/mL and a linear concentration range of 1-100 pg/mL with good sensitivity. Detection of CLU in spiked human plasma was de...
We report on a label-free immunosensor based on graphene field effect transistors (G-FETs) for th... more We report on a label-free immunosensor based on graphene field effect transistors (G-FETs) for the ultrasensitive detection of Human Chorionic Gonadotrophin (hCG), as an indicator of pregnancy and related disorders, such as actopic pregnancy, choriocarcinoma and orchic teratoma. Pyrene based bioactive ester was non-covalently anchored onto the graphene channel in order to retain the sp² lattice. The G-FET transfer characteristics showed repeatable and reliable responses in all surface modifying steps using a direct current (DC) readout system. The hCG concentration gradient showed a detection limit of ~1 pg·mL(-1). The proposed method facilitates the cost-effective and viable production of graphene point-of-care devices for clinical diagnosis.
Co-occurrence of arsenic (As) and chromium (Cr) is observed worldwide. However, their combined ef... more Co-occurrence of arsenic (As) and chromium (Cr) is observed worldwide. However, their combined effects on plant physiology are not well documented. This experiment was designed to study both individual and combined phytotoxicity of arsenic (As) and chromium (Cr) in jute in terms of plant growth, net photosynthesis, chlorophyll content, oxidative stress and antioxidant enzyme activities. Two jute varieties, O-795 (Cr-tolerant) and O-9897 (Cr-sensitive), were grown under various level of As and/or Cr in pots under greenhouse condition. As or Cr stress significantly decreased plant growth, chlorophyll content, chlorophyll florescence (Fv/Fm), photosynthetic rate (Pn) and caused oxidative damage compared to control, indicated by increased MDA and H 2 O 2 contents. The activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX), glutathione reductase (GR) and catalase (CAT), were dramatically increased in both varieties compared to control. Moreover, less severe inhibition of plant growth and oxidative damage was observed in O-795 than in O-9897 indicating variety O-795 had more efficient defense system to mitigate heavy metal induced oxidative stress. The combined stress of low level of As (50 mg kg-1) plus Cr treatment caused less inhibition of plant growth and alleviated oxidative stress, in both varieties compared to Cr stress alone. In contrast, high level (100 mg kg-1) As plus Cr caused a further decreased plant growth and chlorophyll content, increased MDA and H 2 O 2 contents as well as antioxidative enzymes activities significantly (P≤0.05). These results suggest that the combined toxicity of low level As plus Cr in jute is lower than that of individual Cr or As. As exposure up to 50 mg kg-1 is supposed to be useful in mitigating Cr toxicity and more than 50 mg kg-1 had the synergistic toxic effect.
ABSTRACTVibrio choleraeand enterotoxigenicEscherichia coli(ETEC) are noninvasive mucosal pathogen... more ABSTRACTVibrio choleraeand enterotoxigenicEscherichia coli(ETEC) are noninvasive mucosal pathogens that cause acute watery diarrhea in people in developing countries. Direct assessment of the mucosal immune responses to these pathogens is problematic. Surrogate markers of local mucosal responses in blood are increasingly being studied to determine the mucosal immune responses after infection. However, the volume of blood available in children and infants has limited this approach. We assessed whether an approach that first isolates β7-positive cells from a small volume of blood would allow measurement of the antigen-specific immune responses in patients with cholera and ETEC infection. β7 is a cell surface marker associated with mucosal homing. We isolated β7-expressing cells from blood on days 2, 7, and 30 and used an enzyme-linked immunosorbent spot (ELISPOT) assay to assess the gut-homing antibody-secreting cells (ASCs) specific to pathogen antigens. Patients with ETEC diarrhea s...
Arsenic (As) and Chromium (Cr) toxicity often occurs concurrently in agricultural soils, which le... more Arsenic (As) and Chromium (Cr) toxicity often occurs concurrently in agricultural soils, which lead to a significant decline in crop growth and yield. A pot experiment was conducted to investigate the effects of As and Cr in the soil on the uptake of mineral elements as well as As and Cr in the two jute varieties differing in Cr tolerance during May to October, 2013. Here we report the effects of combined As and Cr stresses on plant biomass, photosynthesis, metal and nutrient uptake compared to As or Cr stress alone. Chromium tolerant variety, O-795, had significantly (p≤0.05) higher Cr and As levels in roots, stems and leaf tissues than Cr sensitive variety, O-9897. Roots had much higher As and Cr contents than above-ground parts. Arsenic stress reduced potassium (K +), magnesium (Mg 2+), iron (Fe 3+), copper (Cu 2+), manganese (Mn 2+) and zinc (Zn 2+) contents in the roots and inhibited calcium (Ca 2+), and from being translocated into shoots and leaves. Chromium stress resulted i...
We report simple and rapid capillary electrophoresis (CE) separation followed by in-channel pulse... more We report simple and rapid capillary electrophoresis (CE) separation followed by in-channel pulsed amperometric detection (PAD) of three common triazine herbicides: simazine, atrazine and ametryn that are used to control broad leaf weeds and annual grasses. For their detection in soil and groundwater samples, a CE-PAD microfluidic chip was fabricated using standard photolithography methods. Cyclic voltammetry was conducted on these herbicides that exhibited a characteristic cathodic peak at À0.70 V for simazine or atrazine and À0.80 V for ametryn, without any anodic peak at reverse scan, indicating that the cathodic peaks were irreversible electron transfer processes. For effective CE-PAD separation of triazine complex, the capillary was filled with 1.5% agarose. The pulsed amperometric detection of these chemicals ensured better sensor response and low electrode fouling. The average electropherogram of simazine, atrazine and ametryn showed single peaks at 58, 66 and 74 s, respectively at 20 V/cm separation potential. A mixture of all three herbicides showed similar separated peaks. HPLC was also conducted in a soil spiked with these pollutants to compare the method. The results hold the promise of detecting triazines within a very short time.
Epilachna vigintioctopunctata is an important pest that causes considerable economic losses to ma... more Epilachna vigintioctopunctata is an important pest that causes considerable economic losses to many crops including egg-plants. The crude aqueous extracts of leaves from three indigenous plants namely Ricinus communis, Calotropis procera and Datura metel were used against this beetle aiming at its control under laboratory conditions. Larvicidal bioassays of the extracts showed the following order of toxicity: R. communis (LC50=18.40%)…
2008 10th International Conference on Advanced Communication Technology, 2008
In this paper we present the model of smart collaborative objects that can share the responsibili... more In this paper we present the model of smart collaborative objects that can share the responsibilities of backend server by local processing and collaborating with other objects. We propose the technique to adapt the local inferring using the distributed knowledgebase and a framework for development of context aware software for smart environment We also propose a platform for collaborative object to reduce communication overhead and thus save enormous energy.
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Papers by Kamrul islam