Storage studies of Anaphes iole Girault (Hymenoptera: Mymaridae) at different developmental stages, temperatures and light-dark regimes

A series of experiments were conducted to study the storage life of Anaphes iole Girault (Hymenoptera: Mymaridae) parasitizing eggs of lygus bug Lygus hesperus Knight at different developmental stages, temperatures and photoperiods. Lygus eggs, parasitized by Anaphes iole were held for one, three, six and nine days and were stored at 10 and 4 ºC, and two photoperiods (complete darkness and 09:15 (L:D)) for 20, 40, 60, and 80 days. The highest adult emergence resulted from parasitized lygus eggs held for six days at 29 ºC and then stored for 40, 60 and 80 days. Adult emergence was better when eggs were stored at 10 ºC than at 4 ºC. Complete darkness gave better adult emergence than 9:15 (L:D) photoperiod. When six-day old parasitized lygus eggs were stored in complete darkness at 10 ºC for 20, 40, 60 and 80 days there were 62.90, 42.50, 29.60 and 8.35% emergence respectively. Significantly lower number of adult A. iole emerged from lygus eggs parasitized by A. iole then held for one, three and nine days after parasitization at 29 ºC then stored at 4 °C, 9:15 (L:D) photoperiod, than from eggs parasitized and held for six days at 29 ºC and then stored in complete darkness at 10 ºC

Individual knowledge management engagement, knowledge-worker productivity, and innovation performance in knowledge-based organizations: the implications for knowledge processes and knowledge-based systems

The literature on the knowledge management relatively ignores an important concept, the individual knowledge management engagement-the degree to which a knowledge worker is involved with the knowledge management-related activities. This concept is imperative for nurturing the productivity of knowledge workers, knowledge management architecture effectiveness, and innovation. Therefore, this study proposes the mediating role of knowledge-worker productivity between individual knowledge management engagement and innovation. The data were collected from the 330 knowledge workers of IT sector of Pakistan and analyzed using the SmartPLS 3 Version 2.6. The results indicate the partial mediation of knowledge-worker productivity between the individual knowledge management engagement and innovation. The results suggest the pivotal role of individual knowledge management engagement in increasing the innovation and knowledge-worker productivity in the knowledge-based organizations.info:eu-repo/semantics/publishedVersio

PANC Study (Pancreatitis: A National Cohort Study): national cohort study examining the first 30 days from presentation of acute pancreatitis in the UK

Abstract Background Acute pancreatitis is a common, yet complex, emergency surgical presentation. Multiple guidelines exist and management can vary significantly. The aim of this first UK, multicentre, prospective cohort study was to assess the variation in management of acute pancreatitis to guide resource planning and optimize treatment. Methods All patients aged greater than or equal to 18 years presenting with acute pancreatitis, as per the Atlanta criteria, from March to April 2021 were eligible for inclusion and followed up for 30 days. Anonymized data were uploaded to a secure electronic database in line with local governance approvals. Results A total of 113 hospitals contributed data on 2580 patients, with an equal sex distribution and a mean age of 57 years. The aetiology was gallstones in 50.6 per cent, with idiopathic the next most common (22.4 per cent). In addition to the 7.6 per cent with a diagnosis of chronic pancreatitis, 20.1 per cent of patients had a previous episode of acute pancreatitis. One in 20 patients were classed as having severe pancreatitis, as per the Atlanta criteria. The overall mortality rate was 2.3 per cent at 30 days, but rose to one in three in the severe group. Predictors of death included male sex, increased age, and frailty; previous acute pancreatitis and gallstones as aetiologies were protective. Smoking status and body mass index did not affect death. Conclusion Most patients presenting with acute pancreatitis have a mild, self-limiting disease. Rates of patients with idiopathic pancreatitis are high. Recurrent attacks of pancreatitis are common, but are likely to have reduced risk of death on subsequent admissions. </jats:sec

Étude sur les modèles aérodynamiques de la sédimentation des débits solides en suspension dans les retenues

By means of computation methods the amount of settled suspended load in reservoirs can be determined. The disadvantage is that with these computation methods the problem of suspended load sedimentation is too schematized and they do not take fully into account the shape of the reservoir and the velocity distribution in it. The authors established, by theoretical and experimental analysis that the suspended load sedimentation in reservoirs of hydraulic structures can be studied successfully on aerodynamic models. From the point of view of flow similarity conditions it is sufficient that the phenomena studied are in the automodel sphere of Reynolds numbers and to attain approximate similarity of resistance coefficients according to relationship (2). In view of the actual possibilities of attaining resistance coefficients on a model, this condition usually involves double to quadruple distortion of the model. It follows from analysis of the conditions of suspended load sedimentation similarity on aerodynamic models that the basic condition of suspended load sedimentation similarity is given by the relationship (12). This condition is a consequence of the similarity of the trajectories of suspended load grains, where turhulence is neglected. The aerodynamic model should he designed such that the distortion of suspended grain trajectories by inertial forces not in similarity can he neglected. The values of this distortion can be computed according to equations (21) and (27). A further part deals with the method of construction of the aerodynamic reservoir model. Experimental equipment is proposed for the direct proportioning of ungraded material representing the suspended load (Fig. 2). With this equipement, material with a larger diameter than permissihle for similarity is automatically eliminated. The same equipement can be also used for the grading of material into the requisite fractions. A computation procedure is proposed for the dimensioning of individual parts of this equipment. In 1962, hydraulic problems connected with the completion of the power station for the Samarra hydraulic scheme on the river Tigris in Iraq were investigated on a model. In view of the exceptionally large quantities of sediment carried by the Tigris, the problem of silt in the reservoir was a very serious one indeed. If the water level in the reservoir were to remain at maximum elevation, 75 per cent of the reservoir volume would silt up completely in 15 years. The authors have proposed reservoir regulation and dam operation methods to slow down and control silting in the reservoir. A 1 : 4 000/1 : 1 000 scale aerodynamic model was used for suspended load sedimentation research for urgently-required tests on a series of regulation methods. Fine sawdust was used to simulate suspended load. By means of the method described an approximately equal portion of the whole inflow of sedimented suspended load was attained in the reservoir as by computation without considering turbulence [4, 7]. As the reservoir sedimentation experiment itself takes very little time on the model, it was possible during both this and the investigation with streaming flow to study reservoir silting conditions for several alternative regulation dam layouts. The effects of various regulation measures showed up strikingly by the different types of sedimentation pattern they produced, which enabled the proposed measures to be reliably assessed (see Figures 5 and 6 for instance). The results of the study of reservoir sedimentation obtained by the above method were compared with the streaming flow investigation results obtained by smoke visualisation. It was estahlished that in the given case the most extensive suspended load sediment deposits formed in the regions of most extensive water flow, as is evident from the comparison of Figures 6 and 7. More comprehensive streaming flow tests with regulation in the reservoir found favorable on aerodynamic model were run on a hydraulic model to a scale of 1 : 200/1: 100. The overall results obtained on the aerodynamic model confirmed those of the hydraulic model study. Results of this study show that the described method of experimental research makes possible the solution of the prohlem of reservoir sedimentation with suspended load and the determination of the effect of regulation measures in reservoirs on the settlement of suspended loads. These data show that the method is rapid and not expansive. It provides a means of testing a series of alternative regulation measures in the reservoir from the point of view of their effect on suspended load sedimentation. The advantage of the proposed method over computation, is that it also allows for the velocity distribution in the reservoir, what is not entirely possible by computation alone

<i>Pseudopropionibacterium propionicum</i> as a Cause of Empyema; A Diagnosis with Next-Generation Sequencing

Pseudopropionibacterium propionicum (P.p.) is an anaerobic, Gram-positive, branching beaded rod that is a component of the human microbiome. An infection of the thoracic cavity with P.p. can mimic tuberculosis (TB), nocardiosis, and malignancy. We present a case of a 77-year-old male who presented with dyspnea and a productive cough who was initially misdiagnosed with TB based on positive acid-fast staining of a pleural biopsy specimen and an elevated adenosine deaminase level of the pleural fluid. He was then diagnosed with nocardiosis based on the Gram stain of his pleural fluid that showed a Gram-positive beaded and branching rod. The pleural fluid specimen was culture-negative, but the diagnosis of thoracic P.p. infection was determined with next-generation sequencing (NGS). The patient was initially treated with imipenem and minocycline, then ceftriaxone and minocycline, and later changed to minocycline only. This report shows the utility of NGS in making a microbiological diagnosis when other techniques either failed to provide a result (culture) or gave misleading information (histopathologic exam, pleural fluid adenosine deaminase determination, and organism morphology on Gram stain)

Human Papillomavirus Status and the Risk of Cerebrovascular Events Following Radiation Therapy for Head and Neck Cancer

Background: Radiation therapy (RT) is a standard treatment for head and neck cancer; however, it is associated with inflammation, accelerated atherosclerosis, and cerebrovascular events (CVEs; stroke or transient ischemic attack). Human papillomavirus (HPV) is found in nearly half of head and neck cancers and is associated with inflammation and atherosclerosis. Whether HPV confers an increased risk of CVEs after RT is unknown. Methods and Results: Using an institutional database, we identified all consecutive patients treated with RT from 2002 to 2012 for head and neck cancer who were tested for HPV. The outcome of interest was the composite of ischemic stroke and transient ischemic attack, and the association between HPV and CVEs was assessed using Cox proportional hazard models, competing risk analysis, and inverse probability weighting. Overall, 326 participants who underwent RT for head and neck cancer were tested for HPV (age 59±12 years, 75% were male, 9% had diabetes mellitus, 45% had hypertension, and 61% were smokers), of which 191 (59%) were tumor HPV positive. Traditional risk factors for CVEs were similar between HPV‐positive and ‐negative patients. Over a median follow‐up of 3.4 years, there were 18 ischemic strokes and 5 transient ischemic attacks (event rate of 1.8% per year). The annual event rate was higher in the HPV‐positive patients compared with the HPV‐negative patients (2.6% versus 0.9%, P=0.002). In a multivariable model, HPV‐positive status was associated with a >4 times increased risk of CVEs (hazard ratio: 4.4; 95% confidence interval, 1.5–13.2; P=0.008). Conclusions: In this study, HPV‐positive status is associated with an increased risk of stroke or transient ischemic attack following RT for head and neck cancer

Legislative Documents

Also, variously referred to as: House bills; House documents; House legislative documents; legislative documents; General Court documents

Catalyst- and metal-free C(sp 2)–H bond selenylation of (N-hetero)-arenes using diselenides and trichloroisocyanuric acid at room temperature

Abstract In this paper, we report an eco-friendly approach for the C(sp 2)–H bond selenylation of imidazopyridines and other N-heteroarenes as well as simple arenes at ambient temperature. This new protocol consists of the reaction between (N-hetero)-arenes and the diorganyl-diselenides and trichloroisocyanuric acid (TCCA)-ethanol reagent system. In a short reaction time, the desired selenylated products were obtained regioselectively in good yields, with tolerance for a wide range of functional groups