Miracle-dz/UniFAR-FTUs huggingface dataset:
Study on mismatch losses in large PV plants: data analysis of a case study and modeling approach

The mismatch effect is of fundamental importance in the operation of photovoltaic (PV) power plants because it causes significant losses in energy production. Mismatch originates from several factors such as non-uniform modules aging, shading, dust accumulation, faults in tracker systems and so on. Evaluation of mismatch level is a difficult task because it is necessary to take into account many factors: power configuration, geographical position, weather conditions, quality of measurements provided by dataloggers, etc. Moreover, since different criteria can be applied to calculate the percentage of mismatch, different results might be obtained for the same PV system leading in some cases to wrong conclusions. With the purpose of introducing some approaches for the assessment of mismatch losses in large PV fields, this paper presents a study carried out from data acquired in an existing 300 MW PV plant in Brazil in which an experimental 2.5 MW subfield was realized using 60 kW string inverters whose input stage has more DC/DC input converters. This particular power configuration allows the calculation of mismatch at string level as well as at array level at the DC side input of each string inverter. A multi-criteria approach has been implemented with the purpose to evaluate the coherency of results. A modelling strategy, based on an integrated state-space average model, has been exploited in order to get all the electrical quantities in case of faults, missing or wrong measurements.
Diel and seasonal patterns of food intake and prey selection by Coregonus sp. in re‐oligotrophicated Lake Lucerne, Switzerland

Feeding intensity by whitefish Coregonus sp. , in oligotrophic Lake Lucerne in Switzerland was high during dusk when the bulk of potential prey items were in the depth zone occupied by the fish. Diet composition was fairly uniform throughout the day but changed substantially over the seasons. The fish fed opportunistically; differences between seasons reflected changes in prey availability. During the intensive feeding and growing period (May-September), fish were found in the upper 20 m of the lake feeding primarily on cladocerans. Large and non-evasive species, Daphnia spp. and Bythotrephes longimanus, were the most numerous and frequent organisms in the diet during the major part of the growing season. Smaller (Bosmina spp.) as well as evasive species (cyclopoid copepods) were consumed in large numbers when larger, non-evasive species were rare in the lake. The fish showed strong preference for the least abundant crustacean, B. longimanus, while the most abundant crustaceans, calanoid copepods, were rare in the diet. The fish not only selected particular species but, within each species, selected the larger individuals. Diel vertical migration of the prey items in this lake could be, at least in part, attributed to fish predation pressure. The observed selectivity patterns shown by the fish are explained in terms of prey visibility, escape ability, the overlap in distribution of predators and prey in time and space, the profitability of the prey and the present trophic state of the lake.
Breeding biology of Coal-crested Finches

Abstract The Coal-crested Finch (Charitospiza eucosma) is a rare, globally near threatened and poorly known species, endemic to the savannas of central Brazil and Bolivia. We investigated this species' breeding biology in the Brazilian savannas between 2008–2010. We found 44 nests of Coal-crested Finches during one and a half breeding seasons. Coal-crested Finches reproduced in two discrete peaks within the rainy season (i.e., bimodal breeding). Nests were cup-shaped and built on trees with a mean height of 2.18 ± 1.34 m (n = 42). Modal clutch size was 2 (range = 1–3). Eggs averaged 16.32 ± 1.16 mm (length; n = 46), 11.30 ± 1.06 mm (width; n = 46) and 1.40 ± 0.14 g (mass; n = 44). Incubation and nestling periods lasted on average 13.4 ± 0.42 days (n = 5) and 12.0 ± 2.63 days (n = 7), respectively. Young (0–4 days old), middle-aged (5–9 days old) and late nestlings (10–13 days old) weighed from 1.25–6.35 g (n = 10), from 5.30–12.65 g (n = 12) and from 9–11.90 g (n = 9), respectively. Estimated nesting success was 20.08% (n = 38). The Coal-crested Finch has similarities (e.g., nest material, clutch size, eggs, nestling period, nestlings and nesting success) and differences (e.g., nest structure, nest sites, incubation period, breeding season) with other Neotropical finches. We suggest that their bimodal breeding season may have evolved in response to two annual peaks of food resource abundance: arthropods followed by grass seeds.
Single-Incision Mini-Sling for the Treatment of Female Stress Urinary Incontinence: Is it Actually Inferior to Transobturator Vaginal Tape and Tension-Free Vaginal Tape?

Objectives: The aim of the study was to report the extended long-term results of the use of single-incision mini-sling (SIMS), tension-free vaginal tape (TVT), and transobturator tape (TOT) for the treatment of female stress urinary incontinence (SUI) at the Department of Gynecology and Obstetrics of the University Medical Center Ljubljana. Materials and Methods: Enrolled women were evaluated by Patient Global Impression of Severity (PGI-S), Patient Global Impression of Improvement (PGI-I), Sandvik severity scale, Urogenital Distress Inventory (UDI-6), Incontinence Impact Questionnaire (IIQ-7), and Incontinence Questionnaire-Urinary Incontinence (ICIQ-UI) Short Form and data about diagnosis, procedures, complications, reoperations, postoperative results, and satisfaction with procedure were recorded. Results: In analyzed group of patients (n = 357), 116 (32%) underwent SIMS procedure, 189 (53%) TOT, and 52 (15%) TVT. The SIMS, TOT, and TVT groups did not differ significantly from each other in PGI-S, PGI-I, Sandvik severity scale, UDI-6, IIQ-7, and ICIQ-UI Short Form or in postoperative complication rate. Repeat surgery was needed in 9.5% after SIMS, in 13.2% of TOT patients and in 23.1% of TVT patients (P = 0.194). Urinary retention occurred in 9.5% of the SIMS patients, in 9.5% of the TOT patients, and in 13.5% of the TVT patients (P = 0.682). Mesh erosion/inflammation occurred in 3.4% of the SIMS patients, in 6.3% of the TOT patients, and in 3.8% of the TVT patients (P = 0.485). Conclusion: The efficacy and safety of SIMS, TOT, and TVT in the surgical treatment of SUI are comparable. The choice of the technique should be based on the relative pros and cons of techniques and the surgeon's experience.
PCR-based detection of three anaerobic bacteria associated with endodontic-periodontic lesions in type-2 diabetic and nondiabetic subjects

Aim: The aim of this study is to clinically isolate and detect three anaerobic bacteria associated with endodontic-periodontal lesions in type-2 diabetic and nondiabetic patients using polymerase chain reaction (PCR). Materials and Methods: Sixty patients presenting endodontic-periodontal lesions were divided into two groups. Thirty patients with type-2 diabetics (Group 1) and 30 nondiabetic patients (Group 2) were evaluated for the presence of three anaerobic bacteria. Clinical examinations, periapical radiographs, and microbiological sampling from the canal system and periodontal pockets were performed. Qualitative evaluation of bacteria was performed using a multiplex PCR for Porphyromonas gingivalis and Prevotella intermedia. Statistical analysis was performed using Pearson's Chi-square test and Fischer's exact test. Results: Enterococcus faecalis (73.3%) was the predominant bacteria isolated from the root canal in type 2 diabetic patients, followed by P. gingivalis (70%) and P. intermedia (36%) compared to 53.3%, 43.3%, and 23.3%, respectively, among nondiabetic patients. P. gingivalis (73.3%) was the predominant bacteria isolated from periodontal pockets in type II diabetic patients followed by P. intermedia 50% and E. faecalis 30% compared to 36.6%, 33.3%, and 30%, respectively, among nondiabetics. P. gingivalis was detected in the root canal and periodontal pocket in almost similar numbers (70% and 73%), respectively, among type-2 diabetics. Conclusion: Detection of P. gingivalis, P. intermedia, and E. faecalis in both root canal and periodontal pocket samples confirm a viable pathway for the spread of infection through dual sites. Since in the present study, P. gingivalis was found to be present in similar numbers in dual sites among type 2 diabetic patients, importance should be given in treating such anaerobic bacteria in immune-compromised patients.
Delay in presentation and challenges of treatment of complicated abdominal wall hernias in rural Southeast Nigeria

Background: Delay in presentation and treatment of abdominal wall hernias is phenomenal in Africa. The three-pronged problem of delayed presentation, multiple comorbidities, and advancing age makes management of complicated abdominal wall hernias more tasking and hazardous. The purpose of this study was to determine the causes of delayed presentation and treatment outcomes of complicated abdominal wall hernias in our environment. Patients and Methods: This was a 3-year multicenter prospective study of the causes of delayed presentation and treatment outcomes of complicated abdominal wall hernias in rural Southeast Nigeria. Results: A total of 138 patients with complicated abdominal wall hernias were enrolled and comprised of 117 males and 21 females. Of the entire patients, those with inguinal hernia represented 76.1% followed by umbilical hernia (8.0%). Only 18.1% presented within 24 h after the onset of complications, 24.6% between 24 and 48 h, 29.0% between 49 and 72 h, and 28.3% after 72 h. In the preoperative period, theater waiting time was 0–12 h in 10.9%, 13–24 h in 23.2%, 25–48 h in 39.1%, and >48 h in 18.1%. The major barriers against early presentation were financial constraint (23.9%) and treatment at alternative homes (15.9%). The overall morbidity rate was 58.0%, whereas the mortality rate was 13.8%. The bowel resection rate was 26.1%, and majority of the resection (77.8%) and deaths (73.7%) occurred in those who had overall delay beyond 72 h before surgical repair. Conclusion: The rates of morbidity and mortality were proportionally related to the length of delay in the presentation and duration of waiting time before operative repair.
The influence of social factors on adult sex change and juvenile sexual differentiation in a diandric, protogynous epinepheline, Cephalopholis boenak (Pisces, Serranidae)

Adult sex change and juvenile sexual differentiation in the protogynous epinepheline Cephalopholis boenak were demonstrated in captivity to be influenced by social factors. Adult sex change in C. boenak occurred in two directions, female to male and male to female. The presence or absence of a larger male plays an important role in adult female sex change; female(s) did not change sex in the presence of a larger male, but sex change occurred after the removal of the larger males in the same social groups. In male pairs, either the larger or the smaller male changed sex. Male to female sex change has not been reported previously inCephalopholis, and only rarely in epinephelines. This is the first report of direct male sexual differentiation from juveniles (i.e. primary male development), through manipulating the number of juveniles, in a protogynous epinepheline. All isolated, single, juveniles differentiated directly as males, and male to female sex ratios did not differ significantly from 1:1 in all experimental social groups of two to four juveniles. Differentiating males grew significantly faster than differentiating females and undifferentiated juveniles during the 57-week experimental period. The role of growth rate in sex determination in C. boenak is not known but clearly plays a part in juvenile sexual differentiation and merits further investigation. Social factors influencing bi-directional adult sex change and juvenile sexual differentiation are a reflection of plasticity of sexual expression in C. boenak, in particular, and the Serranidae in general.
Smoking, Vaping, and Tobacco Industry During COVID-19 Pandemic: Twitter Data Analysis

The reports suggesting a beneficial effect of nicotine on coronavirus disease 2019 (COVID-19) severity may encourage smoking. We aimed to analyze tweets on COVID-19 and smoking coming from casual Twitter users and Twitter accounts representing the tobacco industry. We collected tweets on COVID-19 and smoking from January 1 to May 1, 2020, using Twitter application programming interface. We analyzed sentiment, likes, or retweet to followers ratios, and the posts coming from the casual users to find pieces of news that could affect the discourse. Tweets coming from industry were analyzed manually. We analyzed n = 33,890 tweets on COVID-19 and smoking. The sentiment of tweets was negative, hitting a nadir in mid-March, but became less negative in April when preprints suggesting benefits from smoking on COVID-19 were released. Similar trends were observed for the ratios of likes or retweets to followers. We found 58 messages from the tobacco industry concerning COVID-19. Twenty-two (37.9 percent) mentioned the efforts of tobacco companies to support the development of a COVID-19 vaccine. Two tweets included Food and Drug Administration statements that there is no evidence that vaping increases the risk of COVID-19. The occurrence of preprints suggesting benefits of smoking in COVID-19 might increase sentiment and reactions to tweets on tobacco products and the virus. The authors of potentially controversial articles should restrain from the promotion of their results before the completion of the peer-review process. Twitter presents a convenient tool to monitor e-discourse during a health crisis. The research community should monitor the tobacco industry's social media.
Investigating the interplay of working memory, affective symptoms, and coping with stress in offspring of parents with Huntington's disease.

OBJECTIVE The offspring of parents with Huntington's disease (HD) are faced with substantial levels of chronic uncontrollable and unpredictable stress. These stressors may place them at heightened risk of psychological distress and negative effects on executive functioning. This study investigated working memory, secondary control coping strategies (e.g., cognitive reappraisal, acceptance, distraction), and symptoms of anxiety/depression in offspring at risk for HD. METHOD Adolescent (ages 10-19) and young adult (ages 20-29) offspring (n = 33; mean [M] age = 19.12 years, standard deviation [SD] = 6.01 years; 61% female) of parents with HD were recruited in a Huntington Disease Society of America Level 1 Center of Excellence. Participants completed self-report measures of coping and neuropsychiatric symptoms (i.e., anxiety, depression) and a standardized working memory assessment. Pearson correlations and path analyses were used to test associations. RESULTS Participant scores on the working memory assessment were significantly lower compared with normative data, and scores on a mixed anxiety/depression scale revealed a significant elevation compared with normative data. Working memory, secondary control coping, and symptoms of anxiety/depression were significantly correlated. Analyses of the full model revealed that the total indirect effect of working memory on anxiety/depression through secondary control coping was significant (β = -0.20). CONCLUSION Secondary control coping skills are an important factor in understanding the relationship between working memory and symptoms of anxiety/depression in the offspring of parents with HD. Future longitudinal research is needed to establish the direction of these associations. Working memory and coping skills represent potential targets for intervention to reduce the risk of anxiety/depression in this population. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
Healing of erosions in rheumatoid arthritis remains elusive: results with 24 months of the anabolic agent teriparatide

Objective: Erosion healing in rheumatoid arthritis (RA) is difficult to demonstrate. This extension study aimed to determine whether 2 years of teriparatide (TPTD) produces erosion healing. Method: Subjects in a previous 12 month randomized controlled trial of TPTD in RA were invited to receive 12 additional months of open-label TPTD. Eleven of the 24 original subjects were enrolled in the extension study, six of whom received TPTD in the final 12 months only. Subjects receiving 24 months of TPTD were assessed for reduction in erosion volume from baseline using computed tomography. We also compared erosion volumes between 12 and 24 months of TPTD. Large erosions in subjects receiving TPTD for 24 months were examined for volume change. Results: In the six patients who received 24 months of TPTD, there was no significant change in erosion volume at the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints compared with baseline. The six subjects who received 24 months of TPTD had similar changes in erosion volume to the five who received 12 months of TPTD, in MCP (p = 0.17) and PIP (p = 0.63) joints. Assessment of large erosions in those receiving TPTD for 24 months showed no evidence of erosion healing. Conclusion: While this extension study was too small to be conclusive, we observed no evidence of reduction in erosion volume with the addition of TPTD for 24 months in subjects with RA in whom disease activity was controlled on a tumour necrosis factor inhibitor. This is consistent with our negative findings at 12 months.
Retrogradation of rye starch pastes

The retrogradation susceptibility of starch determines consumer suitability of food products rich in this polymer. Starch isolated from flour obtained from rye variety 'Amilo', which displays very low amylolytic activity, contains highest amounts of amy- lose and exhibits strong retrogradation susceptibility. Flour from rye 'Dakowskie Zoote' and commercial rye flour type 720, that have higher amylolytic activity in comparison to 'Amilo', contain starch with lower amounts of amylose and reduced retrogradation sus- ceptibility. Wheat starch displays lower degree of retrogradation in comparison to rye, be- cause of larger amounts of phosphorus (phospholipids).
Two reproductive strategies in Baltic Fucus vesiculosus (Phaeophyceae)

Marked seasonal reproduction is a widespread phenomenon in seaweeds in temperate waters strongly influenced by seasonal variations. In the Baltic Sea, however, the perennial brown alga Fucus vesiculosus exhibits two periods of reproduction: early summer (May–June) or late autumn (September–November). In this study, we compared the geographical distribution, the reproductive biology and the recruitment success for F. vesiculosus that reproduce during either of these two periods on the east coast of Sweden. Both monocultures and mixed populations of summer- and autumn-reproducing F. vesiculosus occurred along the mainland coast from the southern parts of the Stockholm archipelago to the southernmost part of Sweden. F. vesiculosus reproduced only during summer around the coasts of the large islands of Öland and Gotland. After reproduction, in July and January respectively, plants that reproduced in summer abscised their receptacles and part of their branches, while plants reproducing in autumn abscised only their receptacles. In laboratory experiments, short-day treatments (light:dark 8:16 h) were shown to initiate receptacles in summer-reproducing plants, whereas plants reproducing in autumn initiated receptacles independently of short- or long-day (light:dark 16:8 h) treatment. Plants reproducing during summer produced more eggs (21.0 × 104 eggs/g−1 frond mass) of smaller size (0.067 mm) than plants reproducing during autumn (8.9 × 104 eggs/g−1 frond mass, egg size 0.070 mm). However, recruitment success in the field was similar irrespective of the period of reproduction. The differences in the photoperiodic response, the differences in reproductive output and egg size between summer and autumn plants, and the observation that a single individual kept the same pattern of reproduction over a period of at least three reproductive seasons, may indicate that the two strategies of reproduction in F. vesiculosus are expressions of two distinct genotypes.
The structure of protein dynamic space

Significance Protein dynamic properties have been computationally accessible only by means of molecular-dynamic simulations, or network models, of specific molecules. We have developed a bioinformatic approach to dynamics, which makes it possible to delineate the dynamic characteristics of large numbers of sequences simultaneously. In this work we report an analysis of the large-scale dynamic structure of protein space. It is demonstrated that proteins of different structural classes have different dynamic behaviors, and that all-helical proteins occur with two distinct types of dynamic behavior. One subset of helical proteins is characterized by localized, helix-based dynamics, while the complementary subset exhibits dynamics of a more three-dimensional nature. This information has not been available through the application of more traditional methods. We use a bioinformatic description of amino acid dynamic properties, based on residue-specific average B factors, to construct a dynamics-based, large-scale description of a space of protein sequences. We examine the relationship between that space and an independently constructed, structure-based space comprising the same sequences. It is demonstrated that structure and dynamics are only moderately correlated. It is further shown that helical proteins fall into two classes with very different structure–dynamics relationships. We suggest that dynamics in the two helical classes are dominated by distinctly different modes––pseudo–one-dimensional, localized helical modes in one case, and pseudo–three-dimensional (3D) global modes in the other. Sheet/barrel and mixed-α/β proteins exhibit more conventional structure–dynamics relationships. It is found that the strongest correlation between structure and dynamic properties arises when the latter are represented by the sequence average of the dynamic index, which corresponds physically to the overall mobility of the protein. None of these results are accessible to bioinformatic methods hitherto available.
Death certificate errors in three teaching hospitals of Zahedan, southeast of Iran

Abstract Accurate completion of death certificates is of critical importance for public health policy and statistical purposes. In assessing 936 available death certificates, most contained one or more errors. Minor errors (e.g. absence of time intervals) were more common than major errors (e.g. the use of general terms instead of specific conditions). Providing education, complying with standards established by the World Health Organization, applying quality control of death certificates, and correcting deficient death certificates in the hospitals seem necessary to inform the effectiveness of public health programs, future health policies, quality health planning, and prioritization of health and medical research programs.