Miracle-dz/UniFAR-FTUs huggingface dataset:
Degradation of an X-K/sub u/ band GaAs/AlGaAs power HBT MMIC under RF stress

This paper summarizes the observed degradation in the performance of a high-efficiency X-K/sub u/ band 1-W HBT power MMIC operating under /spl sim/2 dB compression for an extended period. The main finding of this study is that no new degradation mechanisms appeared, even under severe RF stress; the device degraded in the same manner as with DC stress only. The only significant change in device characteristics was increased base leakage current that resulted in a monotonic reduction in current gain after an initial period of stability, Output power of the MMIC remained essentially unchanged even after current gain had dropped to 60% of its initial value, RF properties of the device, both small and large signal, showed little change even after severe deterioration of DC characteristics. The results of this study suggest that HBT reliability can be effectively evaluated for most applications by applying only DC stress to the device.
The Natural History of Ductal Carcinoma In Situ of the Breast - An Overview.

Ductal carcinoma in situ (DCIS) of the breast is a heterogenous disease and its natural history cannot be directly observed as surgical removal is part of the current standard of care. Studies of incompletely excised breast lesions that were considered benign after biopsy, but at review years later were recognized as DCIS, offers some insight to the natural history of DCIS. Summarizing these retrospective data; 14-53 % of the cases retrospectively diagnosed as DCIS progressed to invasive breast cancer (IBC) during follow-up. While observations from retrospective re-evaluation of biopsies and autopsies adds epidemiological input for understanding the natural history of DCIS, the most important results are still awaited from the ongoing prospective studies on active surveillance of DCIS. These studies with collected data on patient characteristics, life-style and environmental factors, as well as tumor and stromal metabolomics and genomics, will probably further elucidate the natural history of DCIS and how the disease should be treated in the future.
Impact of Extracorporeal Photopheresis on Blood Parameters of Atopic Dermatitis Patients

Background Extracorporeal photopheresis (ECP) is a safe treatment modality with immunomodulatory effects. The latter may also explain efficacy of ECP in patients with atopic dermatitis (AD). Objective We aimed to assess various blood parameters of AD patients who underwent ECP over a maximum 1-year treatment period. Methods We performed a retrospective single-center chart review (clinical data, laboratory data) of adult patients with AD who had received for at least 3 ECP cycles, in part combined with other treatment modalities. Results We studied 60 patients with AD (85% extrinsic type, 15% intrinsic type) who had median number of 14 (4–23) ECP cycles within a maximum 1-year treatment. When compared with baseline, leukocytes and lymphocytes remained significantly decreased after 3-, 6-, 9-, and 12-month ECP (P = 0.014 and P = 0.0012, respectively). A significant decline of eosinophils, as well as eosinophilic cationic protein levels, was observed after 3-, 6-, 9-, and 12-month ECPs (P = 0.011 and P = 0.0017, respectively). Total serum immunoglobulin E (IgE), as well as lactate dehydrogenase, were significantly decreased at 3-, 6-, 9-, and 12-month evaluation compared with baseline (P < 0.00001 and P = 0.00007, respectively). Patients with slight or marked improvement of AD after their ECP treatment period had significantly higher median baseline serum IgE levels than patients who did not respond to ECP (P = 0.0023). Conclusions Several laboratory parameters, including eosinophils, eosinophilic cationic protein, total serum IgE, and lactate dehydrogenase, which declined under ECP, are well-known disease biomarkers for AD patients. With normalization of the abovementioned laboratory parameters, a clinical response to ECP treatment was observed in almost two thirds of patients, confirming that ECP may be an effective combination treatment modality for AD.
Anatomical Analysis of Mandibular Posterior Teeth using CBCT: An Endo-Surgical Perspective

Objective: This study sought to analyse the relationship between mandibular posterior teeth and the surrounding anatomical structures. Methods: A total of 170 CBCT images were examined to obtain measurements regarding the following: buccolingual (BL) and mesiodistal (MD) root thickness at the standard level of resection (3 mm from the apex), the thickness of the overlying buccal and lingual bone at the same level, the proximity of the mandibular canal (MC) to the apices of the mandibular posterior teeth, as well as the horizontal location of the mental foramen (MF). Results: The BL root width at 3 mm from the apex was the broadest at the mesial roots of the first molars with males: 5.33±0.99 mm and females: 5.16±0.88 mm (mean±SD). The root width was narrowest at the second premolars (males: 3.80±0.83 mm; females: 3.61±0.60 mm). At the same level; the buccal bone was thickest over the distal roots of the second molars (males: 6.92±1.85 mm; females: 6.95±1.95 mm) and thinnest over the first premolars (males: 1.73±0.93 mm; females: 1.49±1.01 mm), while the lingual bone was thickest over the distal roots of the first molars (males: 5.58±1.36 mm; females: 4.52±1.24 mm) and thinnest over the distal roots of the second molars (males: 3.13±1.50 mm; females: 2.60±1.46 mm). The nearest root apices to the MC were the distal roots of the second molars (male: 1.21±1.45 mm; female: 1.75±1.97 mm), while the furthest were the mesial roots of the first molars (male: 4.00±2.39 mm; female: 4.77±2.58 mm). The most common horizontal location of the MF was between the first and second premolars (51.8%). The lingual bone was significantly thinner over both roots of first molars in females (P<0.05). Conclusion: As the position of the teeth became more posterior, the buccal bone thickness increased, the lingual bone thickness decreased, and the distance to the MC became closer. CBCT analysis provides distortion- and superimposition-free images of the relevant anatomic structures.
The role of basolateral amygdala orexin 1 receptors on the modulation of pain and psychosocial deficits in nitroglycerin-induced migraine model in adult male rats

Background Migraine headaches have been associated with sensory hyperactivity and anomalies in social/emotional responses. The main objective of this study was to evaluate the potential involvement of orexin 1 receptors (Orx1R) within the basolateral amygdala (BLA) in the modulation of pain and psychosocial dysfunction in a nitroglycerin (NTG)-induced rat model of migraine. Methods Adult male Wistar rats were injected with NTG (5 mg/kg, intraperitoneal) every second day over nine days to induce migraine. The experiments were done in the following six groups (6 rats per group) untreated control, NTG, NTG plus vehicle, and NTG groups that were post-treated with intra-BLA microinjection of Orx1R antagonist SB-334867 (10, 20, and 40 nM). Thermal hyperalgesia was assessed using the hot plate and tail-flick tests. Moreover, the elevated plus maze (EPM) and open field (OF) tests were used to assess anxiety-like behaviors. The animals’ sociability was evaluated using the three-chamber social task. The NTG-induced photophobia was assessed using a light-dark box. Results We observed no change in NTG-induced thermal hyperalgesia following administration of SB-334867 (10, 20, and 40 nM). However, SB-334867 (20 and 40 nM) aggravated the NTG-induced anxiogenic responses in both the EPM and OF tasks. The NTG-induced social impairment was overpowered by SB-334867 at all doses. Time spent in the dark chamber of light-dark box was significantly increased in rats treated with SB-334867 (20 and 40 nM/rat). Conclusions The findings suggest a role for Orx1R within the BLA in control comorbid affective complaints with migraine in rats.
THE IMPACT OF TEST-DRIVEN DEVELOPMENT ON SOFTWARE DEFECTS AND COST: A COMPARATIVE CASE STUDY

Present business world competition between the companies is increasing a lot with respect to quality, services and trust worthiness. Test driven development approach is one of the key factors for quality delivery of products. Test driven approach is one of amongst best practices in software from past decades. One of the most time consuming and costly processes of the Software Development Life Cycle has been the maintenance of production code. As of 2000, the overall maintenance costs have been more than 90%. To overcome this challenge many tools, frameworks and software paradigms have risen. On the forefront of this effort is writing unit test cases by the developers under the banner of Test Driven Development. This practice tackles the problem in the development phase. This work discus on TDD an issue that tackles to reduced cost and defect.
β3‐Adrenoceptor, a novel player in the round‐trip from neonatal diseases to cancer: Suggestive clues from embryo

The role of the β‐adrenoceptors (β‐ARs) in hypoxia‐driven diseases has gained visibility after the demonstration that propranolol promotes the regression of infantile hemangiomas and ameliorates the signs of retinopathy of prematurity (ROP). Besides the role of β2‐ARs, preclinical studies in ROP have also revealed that β3‐ARs are upregulated by hypoxia and that they are possibly involved in retinal angiogenesis. In a sort of figurative round trip, peculiarities typical of ROP, where hypoxia drives retinal neovascularization, have been then translated to cancer, a disease equally characterized by hypoxia‐driven angiogenesis. In this step, investigating the role of β3‐ARs has taken advantage of the assumption that cancer growth uses a set of strategies in common with embryo development. The possibility that hypoxic induction of β3‐ARs may represent one of the mechanisms through which primarily embryo (and then cancer, as an astute imitator) adapts to grow in an otherwise hostile environment, has grown evidence. In both cancer and embryo, β3‐ARs exert similar functions by exploiting a metabolic shift known as the Warburg effect, by acquiring resistance against xenobiotics, and by inducing a local immune tolerance. An additional potential role of β3‐AR as a marker of stemness has been suggested by the finding that its antagonism induces cancer cell differentiation evoking that β3‐ARs may help cancer to grow in a nonhospital environment, a strategy also exploited by embryos. From cancer, the round trip goes back to neonatal diseases for which new possible interpretative keys and potential pharmacological perspectives have been suggested.
Cytotoxicity and chemical profiling of the Red Sea soft corals Litophyton arboreum

Abstract The objective of this research was to evaluate the cytotoxic activities of the fractions and isolated compounds of the soft corals Litophyton arboreum against A549, MCF-7 and HepG2 cell lines by MTT assay method, and to chemically investigate the various metabolites of its total extract using LC-HR-ESI-MS metabolomic profiling. The metabolomic profiling revealed the presence of various metabolites, mainly sesquiterpenes and steroids reported for the first time in L. arboreum. Additionally, eight compounds (1-8) have been isolated from the n-hexane-chloroform (1:1) fraction that exhibited noticeable activity towards A549, MCF-7 and HepG2 cell lines. The steroids (5 and 6), and the sesquiterpene (1) exerted noticeable activity against A549 cell line (IC50 28.5 ± 4.4, 36.9 ± 2.9 and 67.3 ± 9.9 µM/mL, respectively) compared to etoposide as standard cytotoxic agent (IC50 48.3 ± 7.6 µM/mL). Compound 6 also exhibited cytotoxicity against MCF-7 cell line (IC50 55.3 ± 4.9 µM/mL). Graphical Abstract
A Comparison of Network Neutrality Approaches In: The U.S., Japan, and the European Union

In this paper, we compare and contrast the regulatory approaches to addressing Network Neutrality in three countries which represent three roughly different approaches. In the United States, which has suffered the most obvious Network Neutrality problems, the national regulator has promulgated a set of four policy principles aimed at preserving the open characteristics of Internet. These principles ensure Internet users the rights to: access lawful content; run lawful applications; attach lawful and non-harmful devices; and to have competitive alternatives. The U.S. FCC is currently considering extending those policy principles with two new ones. However, it has had significant problems attempting to codify and enforce actionable, legally binding rules. In October 2007, the Japanese MIC introduced Network Neutrality principles as an amendment to the “New Competition Policy Program 2010”. The policy requires that IP networks be accessible to content, to terminal equipment, and equally to all users, at reasonable prices. Network Neutrality also includes the concept of utilizing IP networks with the proper allocation of costs, and without discrimination. This is similar in concept to the “reasonable network management” exception embodied in the U.S. approach. In addition, a working group of four telecom business associations was created in September 2007 to develop a “Guideline for Packet Shaping”. The guidelines cover basic conditions for when packet traffic shaping is permitted, including measures to cancel heavy users’ contracts. Packet shaping should only be allowed in exceptional situations. The guidelines include the basic concept that ISPs should increase network capacity in line with increases in network traffic. As opposed to crafting ex-ante rules which describe the contours of permissible network practices, EU policy seeks to constrain market power by creating sector-specific rules designed to stimulate competition. The intention behind the EU approach is that competition will punish anticompetitive deviations from Network Neutrality.We observe two approaches which seek to ex ante determine the bounds of permissible conduct by IP-based networks and one approach which eschews direct intervention in the problem. We analyse these three approaches, identifying the relative strength and weaknesses of each in the body of this paper.
Frederick Banting's observations leading to the potential for islet neogenesis without transplantation

On 31 October 1920, Sir Frederick Banting, while preparing for a medical student lecture on diabetes, a topic that he knew little about, learned how pancreatic stones resulted in the formation of new islets of Langerhans. He then scribbled down a potential research study of tying off the ducts of the pancreas and collecting the secretions to improve diabetes. These secretions became known as insulin. A century later, 60 different oral medications and 20 different insulins are available for the treatment of diabetes, yet none stimulate new islet formation. One hundred years later, after the discovery of insulin, more than a dozen research teams from around the world have demonstrated that similar studies to Banting's pancreatic ligation studies have resulted in upregulation of the REG gene. There are now more than 200 publications on the role of Reg gene proteins and shorter Reg peptides in initiating new islet formation islet from exocrine pancreatic ducts and protecting against inflammation to islets resulting in islet death. Human data through Phase 2b in both type 1 and 2 diabetes patients with diabetes for an average of 20 years have demonstrated that the use of a shorter bioactive Reg peptide can generate new endogenous insulin production, resulting in significant reductions in hemoglobin A1C and increases in stimulated C‐peptide. The observations of Frederick Banting, one century ago, may now lead to the generation of therapeutics that form new islets without the need for transplantation.
Older Americans’ Perceptions of the Federal Government’s Pandemic Response: Voices From the COVID-19 Coping Study

There is limited understanding of how older adults evaluated the federal government’s COVID-19 response, despite their increased health risks during the pandemic and their important role in politics. We conducted qualitative thematic analysis on a nationally representative subsample of respondents aged 55+ from the COVID-19 Coping Study (N = 500) who were asked: “How do you feel about federal government responses to and handling of the COVID-19 pandemic? ” Analyses identified largely negative opinions about the federal government and former President Trump’s leadership, though some were neutral or positive. Participants expressed concerns that the federal government was undermining science, and that sending mixed messages about personal protective equipment and masks was dangerous. Perspectives were divergent and reflective of the country’s polarization surrounding COVID-19 policies. Results can inform efforts to build unity between political parties and identify strategies that governments can use to better respond to future public health crises.
A plant cell wall-associated kinase encoding gene is dramatically downregulated during nematode infection of potato

ABSTRACT Plant cell wall associated kinases (WAKs) and WAK-like kinases (WAKLs) have been increasingly recognized as important regulators of plant immunity against various plant pathogens. However, the role of the WAK/WAKL family in plant-nematode interactions remains to be determined. Here, we analyzed a WAK-encoding gene (Soltu.DM.02G029720.1) from potato (Solanum tuberosum). The Soltu.DM. 02G029720.1 encoded protein contains domains characteristic of WAK/WAKL proteins and shows the highest similarity to SlWAKL2 from tomato (S. lycopersicum). We thus named the gene as StWAKL2. Phylogenetic analysis of a wide range of plant WAKs/WAKLs further revealed close similarity of StWAKL2 to three WAK/WAKL proteins demonstrated to play a role in disease resistance. To gain insights into the potential regulation and function of StWAKL2, transgenic potato lines containing the StWAKL2 promoter fused to the β-glucuronidase (GUS) reporter gene were generated and used to investigate StWAKL2 expression during plant development and upon nematode infection. Histochemical analyses revealed that StWAKL2 has specific expression patterns in potato leaf and root tissues. During nematode infection, GUS activity was mostly undetected at nematode infection sites over the course of nematode parasitism, although strong GUS activity was observed in root tissues adjacent to the infection region. Furthermore, mining of the transcriptomic data derived from cyst nematode infection of Arabidopsis roots identified a few WAK/WAKL genes, including a StWAKL2 homologue, found to be significantly down-regulated in nematode-induced feeding sites. These results indicated that specific suppression of WAK/WAKL genes in nematode-induced feeding sites might be crucial for cyst nematodes to achieve successful infection of host plants. Further studies are needed to uncover the role of WAK/WAKL genes in plant defenses against nematode infection.
An exploratory study to assess patterns of influenza- and pneumonia-related mortality among the Italian elderly

ABSTRACT Older adults are at disproportionately high risk of severe influenza-related outcomes and represent the main target of the annual influenza vaccination. The protective effect of seasonal influenza vaccination on the observed mortality indicators is controversial. In this ecological study, spatiotemporal patterns of pneumonia- and influenza-related mortality registered in the Italian elderly over seven (2011–2017) consecutive seasons were explored and the epidemiological association between the observed local pneumonia- and influenza-related mortality and influenza vaccination campaign features were modeled by using both fixed- and random-effects panel regression models. The descriptive spatiotemporal analysis showed a clear North–South gradient, where northern regions tended to report more pneumonia- and influenza-related deaths. After adjustment for potential confounders, it was found that each 1% increase in influenza vaccination coverage rate would be associated (P < .001) with a 1.6–1.9% decrease in pneumonia- and influenza-related mortality. Moreover, each 1% increase in the use of MF59®-adjuvanted trivalent influenza vaccine would be associated (P < .05) with a further 0.4% decrease in pneumonia- and influenza-related mortality. This study supports the increase in annual influenza vaccination in Italy and suggests that a higher level of use of the adjuvanted influenza vaccine in the elderly may be beneficial.
First Acute-Course Electroconvulsive Therapy for Moderate-to-Severe Depression Benefits Patients With or Without Accompanying Baseline Cognitive Impairment

Background Researchers are increasingly investigating therapeutic response associated with new patient subgroups as a way to improve electroconvulsive therapy (ECT) treatment outcomes and reduce adverse events. This study is the first to examine baseline cognitive impairment status as a predictor of clinical outcome in first acute-course ECT patients. Methods Baseline cognitive function at various thresholds and serial depressive symptom severity data from first-time ECT patients were examined using generalized linear mixed-effects models. Results Of 1345 patients who met the inclusion criteria, 617 had available data at their third assessment visit (~15th treatment visit). There was a robust improvement in depression symptoms over time (P < 0.0001), and cognitive function was not associated with baseline levels of depressive symptoms or serially measured change in self-reported symptom severity during acute-phase ECT. Conclusions These results indicate that an acute course of ECT for the treatment of moderate-to-severe depression benefits patients with or without accompanying baseline cognitive impairment. These findings may be useful in informing shared decision-making discussions about ECT risks and expected benefits.
Advancing genomic technologies and clinical awareness accelerates discovery of disease-associated tandem repeat sequences

Expansions of gene-specific DNA tandem repeats (TRs), first described in 1991 as a disease-causing mutation in humans, are now known to cause >60 phenotypes, not just disease, and not only in humans. TRs are a common form of genetic variation with biological consequences, observed, so far, in humans, dogs, plants, oysters, and yeast. Repeat diseases show atypical clinical features, genetic anticipation, and multiple and partially penetrant phenotypes among family members. Discovery of disease-causing repeat expansion loci accelerated through technological advances in DNA sequencing and computational analyses. Between 2019 and 2021, 17 new disease-causing TR expansions were reported, totaling 63 TR loci (>69 diseases), with a likelihood of more discoveries, and in more organisms. Recent and historical lessons reveal that properly assessed clinical presentations, coupled with genetic and biological awareness, can guide discovery of disease-causing unstable TRs. We highlight critical but underrecognized aspects of TR mutations. Repeat motifs may not be present in current reference genomes but will be in forthcoming gapless long-read references. Repeat motif size can be a single nucleotide to kilobases/unit. At a given locus, repeat motif sequence purity can vary with consequence. Pathogenic repeats can be “insertions” within nonpathogenic TRs. Expansions, contractions, and somatic length variations of TRs can have clinical/biological consequences. TR instabilities occur in humans and other organisms. TRs can be epigenetically modified and/or chromosomal fragile sites. We discuss the expanding field of disease-associated TR instabilities, highlighting prospects, clinical and genetic clues, tools, and challenges for further discoveries of disease-causing TR instabilities and understanding their biological and pathological impacts—a vista that is about to expand.