Search for the dark photon in π0\pi^0 decays

A sample of $1.69\times 10^7$ fully reconstructed $\pi^0\to\gamma e^+e^-$ decay candidates collected by the NA48/2 experiment at CERN in 2003--2004 is analysed to search for the dark photon ($A'$) production in the $\pi^0\to\gamma A'$ decay followed by the prompt $A'\to e^+e^-$ decay. No signal is observed, and an exclusion region in the plane of the dark photon mass $m_{A'}$ and mixing parameter $\varepsilon^2$ is established. The obtained upper limits on $\varepsilon^2$ are more stringent than the previous limits in the mass range $9~{\rm MeV}/c^2<m_{A'}<70~{\rm MeV}/c^2$. The prospects of the dark photon search in the $K^\pm\to\pi^\pm A'$ decay are also discussed.Comment: Contribution to the proceedings of the PLANCK 2015 conference, Ioannina, Greece, 25-29 May 201

Rising Prevalence of Mild Chronic Gastritis in Children: A Single Center Experience

OBJECTIVES AND METHODS: We analyzed upper endoscopic and histological findings in 3 cohorts of children undergoing upper gastrointestinal endoscopy over a 10-year period. Five hundred seventy-nine patients were identified, with 244 (42%), 199 (35%), and 136 (23%) in the 2011, 2015, and 2019 cohorts, respectively. The most common symptoms and signs were abdominal pain, vomiting, failure to thrive, and diarrhea. RESULTS: The number of patients who had histological evidence of chronic gastritis increased from 2011 (n = 70, 29%) to 2015 (n = 106, 53%) and 2019 (n = 92, 68%; CONCLUSIONS: There has been a significant rise in the prevalence of mild chronic gastritis or non-specific gastritis over the last decade in our population

Peri-procedural brain lesions prevention in CAS (3PCAS). Randomized trial comparing CGuard™ stent vs. wallstent

Background: Aim of this study was to evaluate peri-procedural incidence of new diffusion-weighted-magneticresonance- imaging (DWMRI) brain lesions in CAS patients treated by carotid mesh stent (CGuard™) or closed-cell stent (Wallstent™). Methods: Consecutive patients with asymptomatic carotid stenosis ≥ 70% were submitted to preoperative DWMRI scan, to exclude the presence of preoperative silent cerebral lesions. Patients were randomized to CGuard orWallstent. DWMRI was performed immediately after the intervention and at 72-hour postoperatively. Moreover, pre and postoperative Mini-Mental-State-Examination Test (MMSE) and aMontreal-Cognitive-Assessment (MoCA) test were conducted, and S100β and NSE neurobiomarkers were measured at 5-time points (preoperatively, 2, 12, 24, and 48 h postoperatively). Results: From January 2015 to October 2016, sixty-one consecutive eligible patients were submitted to preoperative DWMRI scan. Three patients were excluded because of preoperative silent cerebral lesions. In 29 CGuard patients, 1 developed a minor stroke and 8 silent newlesionswere observed in the 72 h-DWMRI (31%): 4 lesions were ipsilateral, and 4 lesions were contra or bilateral. In 29 Wallstent patients, 7 clinically-silent new lesions were found in the 72 h-DWMRI (24.1%; p = 0.38). In 4 cases lesions were ipsilateral and in 3 cases contra or bilateral. S100B values doubled at 48 h in 24 patients, and among them 12 presented new DWMRI lesions. 48-h S100B increase was significantly related to 72-h DWMRI lesions (p= 0.012). Conclusions: In our experience both stents showed an acceptable rate of subclinical neurological events with no significant differences at 72-hour DWMRI between groups. Bilateral/contralateral lesions suggest that periprocedural neurological damage may have extra-carotid sources

Editor's Choice – Epidemiology, Diagnostics, and Outcomes of Acute Occlusive Arterial Mesenteric Ischaemia : A Population Based Study

Publisher Copyright: © 2022 The Author(s)Objective: The exact incidence and outcomes of acute occlusive arterial mesenteric ischaemia (AMI) are unclear as most studies include only patients diagnosed correctly while alive. The aim of this study was to assess the incidence, mortality, and diagnostics of AMI by also including patients diagnosed post-mortem. Methods: This retrospective study comprised patients diagnosed with AMI either alive or post-mortem between 2006 and 2015 within a healthcare district serving 1.6 million inhabitants. Key exclusion criteria were venous or non-obstructive ischaemia. Results: A total of 470 patients were included in the study of which 137 (29%) were diagnosed post-mortem. The most common misdiagnoses on those not diagnosed alive were unspecified infection (n = 19, 17%), gastrointestinal bleeding (n = 13, 11%), and ileus (n = 13, 11%). Of those diagnosed alive (n = 333), 187 (56%) underwent active surgical or endovascular treatment. During the 2006 – 2015 period, the overall incidence of AMI was 3.05 (95% CI 2.78 – 3.34)/100 000 person years and 26.66 (95% CI 24.07 – 29.45) for those aged 70 years or more. The mean autopsy rate during the study period was 29% for the overall population (32% during 2006 – 2010 and 25% during 2011 – 2015) and 18% for those aged 70 years or more. Overall, the 90-day mortality was 83% in all patients. The ninety day mortality decreased, being 87% during the first period (2006 – 2010) and 79% during the second period (2011 – 2015) (p = .029), while at the same time the proportion of patients diagnosed alive rose from 71% to 80% (p = .030) and the number of endovascular revascularisations rose from 1% to 5% (p = .022). Conclusion: A significant proportion of patients with AMI are not diagnosed alive, which is reflected in the mortality rates. Post-mortem examinations and autopsy rate data continue to be key factors in epidemiological studies on AMI.Peer reviewe

INDONESIA’S DEMOCRACY UNDER JOKO “JOKOWI†WIDODO LEADERSHIPS: CONSTRUCTING HUMAN RIGHTS IN GLOBALIZATION (2014-2019)

On 20 October 2014, Joko “Jokowi: Widodo was inaugurated as 7th Indonesia President in the Parliament House, Senayan, to lead the world biggest Muslim country for 5 (five) years presidency (2014-2019). President Joko Widodo’s record during his first year in office was mixed. His administration signaled it would more actively defend the rights of beleaguered religious minorities, victimized by both Islamist militants, and discriminatory laws, but made few concrete policy changes. He granted clemency in May 2015 to five of Papua’s political prisoners and released another one in October, but at the same time had not freed the approximately 70 (seventy) Papuans and 29 (twenty nine) Ambones which still imprisoned for peaceful advocacy of independence. He announced lifting of decades-old restrictions on foreign media access to Papua, but then did not follow through, allowing senior government officials to effectively defy the new policy without consequences. While in August 2015, Joko Widodo announced that Jakarta will create a reconciliation commission in addressing human rights violations of the past 50 years and still left out the details (1965-2015). This research attempts to describe analytically how Indonesia Human Rights policy affects and providing solution to overcome national human rights issues.&nbsp; &nbsp; Keywords: minorities, discrimination, human rights, national policy, leaderships &nbsp; Abstrak &nbsp; Pada tanggal 20 Oktober 2014, Joko "Jokowi: Widodo dilantik sebagai Presiden Indonesia ke-7 di Gedung Parlemen, Senayan, untuk memimpin negara Muslim terbesar di dunia selama 5 (lima) tahun kepresidenan (2014-2019). Catatan terkait Presiden Joko Widodo selama tahun pertamanya menjabat beragam. Pemerintahannya mengisyaratkan akan lebih aktif membela hak-hak minoritas agama yang terdiskriminasikan, yang menjadi korban baik oleh militan Islam, dan undang-undang yang diskriminatif, namun hanya sedikit membuat perubahan kebijakan konkret. Dia memberikan grasi pada bulan Mei 2015 kepada lima tahanan politik Papua dan membebaskan satu lagi di bulan Oktober, namun pada saat bersamaan belum membebaskan sekitar 70 (tujuh puluh) orang Papua dan 29 (dua puluh sembilan) warga Ambon yang masih dipenjarakan karena advokasi kemerdekaan secara damai. Dia mengumumkan pencabutan pembatasan akses media asing yang telah berlangsung puluhan tahun ke Papua, namun kemudian tidak menindaklanjuti, yang memungkinkan pejabat pemerintah senior untuk secara efektif menentang kebijakan baru tersebut tanpa konsekuensi. Sementara pada bulan Agustus 2015, Joko Widodo mengumumkan bahwa Jakarta akan membuat komisi rekonsiliasi dalam menangani pelanggaran hak asasi manusia dalam 50 tahun terakhir dan masih mengabaikan rinciannya (1965-2015). Penelitian ini mencoba untuk menggambarkan secara analitis bagaimana kebijakan Hak Asasi Manusia Indonesia mempengaruhi dan memberikan solusi untuk mengatasi masalah hak asasi manusia nasional. &nbsp; Kata Kunci: minoritas, diskriminasi, hak asasi manusia, kebijakan nasional, kepemimpina

Suicide Among Adolescents in Center Tunisia: An 18-Year Autopsy Study

Background: Suicide and suicide attempts are more common among adolescents. Many factors are known to influence suicide in particular: region and culture. Adolescent suicide has been widely studied in many countries, but there are, currently, no data relating to adolescent suicide in Tunisia. Aim: The aims of this study were to describe epidemiological aspects of death related to adolescent suicide in Sousse, a city in central Tunisia. Methods: Data of forensic autopsies from 1998 to 2015 related to suicide of adolescents were retrospectively examined considering age, gender, method of death, year and risk factor. Results: 70 cases were reported with female predominance (62, 8%). The age range was from 10 to 19 and most of the suicides occurred in the 15-to-19 age group (75, 7%). Most victims were from rural zones (70%). Self-poisoning was the most used method (47, 1 %) followed by hanging (35, 7%). Hanging was the most common method used by males (17/26) and self-poisoning by females (29/44). Self-poisoning was related to pesticides in the vast majority of cases (29 cases among 33). The identified precipitating factors were chronic family problems in 51.4%, sentimental deception in 8.6%. Conclusion: This retrospective study raises concerns regarding the use of pesticides and the urgent need to provide rural areas with structures and medical equipment. This will ensure adequate suicide prevention in the region

Cache Serializability: Reducing Inconsistency in Edge Transactions

Read-only caches are widely used in cloud infrastructures to reduce access latency and load on backend databases. Operators view coherent caches as impractical at genuinely large scale and many client-facing caches are updated in an asynchronous manner with best-effort pipelines. Existing solutions that support cache consistency are inapplicable to this scenario since they require a round trip to the database on every cache transaction. Existing incoherent cache technologies are oblivious to transactional data access, even if the backend database supports transactions. We propose T-Cache, a novel caching policy for read-only transactions in which inconsistency is tolerable (won't cause safety violations) but undesirable (has a cost). T-Cache improves cache consistency despite asynchronous and unreliable communication between the cache and the database. We define cache-serializability, a variant of serializability that is suitable for incoherent caches, and prove that with unbounded resources T-Cache implements this new specification. With limited resources, T-Cache allows the system manager to choose a trade-off between performance and consistency. Our evaluation shows that T-Cache detects many inconsistencies with only nominal overhead. We use synthetic workloads to demonstrate the efficacy of T-Cache when data accesses are clustered and its adaptive reaction to workload changes. With workloads based on the real-world topologies, T-Cache detects 43-70% of the inconsistencies and increases the rate of consistent transactions by 33-58%.Comment: Ittay Eyal, Ken Birman, Robbert van Renesse, "Cache Serializability: Reducing Inconsistency in Edge Transactions," Distributed Computing Systems (ICDCS), IEEE 35th International Conference on, June~29 2015--July~2 201

Efektivitas Pengembangan Media Pembelajaran Fonovela melalui Pendekatan Saintifik dengan Model Pembelajaran Problem Based Learning Ditinjau dari Kemampuan Penalaran Matematis Siswa SMP

Penelitian ini bertujuan untuk 1) mengembangkan media fotonovela melalui pendekatan saintifik dengan model pembelajaran problem based pada pokok bahasan bangun ruang sisi datar sehingga menghasilkan media pembelajaran yang valid (layak), 2) pada uji coba dilapangan digunakan untuk mengetahui keefektifan rata-rata hasil belajar ditinjau dari kemampuan penalaran matematis siswa SMP.Penelitian pengembangan ini menggunakan desain model ADDIE. Populasi dalam penelitian ini adalah seluruh peserta didik kelas VIII SMP N 1 Mlonggo tahun pelajaran 2014/2015. Sampel yang diambil secara acak sebanyak tiga kelas.Berdasarkan hasil validasi ahli materi diperoleh 85.65% dan ahli media 84.82%, memiliki kriteria sangat baik. Hasil angket tanggapan siswa sebesar 81.5%. dari uji coba dilapangan diperoleh hasil ketuntasan belajar individual untuk kelas eksperimen terdapat 37 dan kelas konrol 29 siswa yang mampu memenuhi KKM sebesar 70. Sedangkan untuk ketuntasan belajar klasikal untuk kelas eksperimen 93% dan kelas kontrol 73%. Dapat disimpulkan bahwa media fotonovela melalui pendekatan saintifik dengan model problem based learning efektif digunakan dalam pembelajaran ditinjau dari kemampuan penalaran matematis siswa SMP pada pokok bahasan bangun ruang sisi datar di kelas VIII SMP N 1 Mlonggo Jepara tahun ajaran 2014/2015

Factors affecting traditional medicinal plant knowledge of the Waorani, Ecuador

Unidad de excelencia María de Maeztu MdM-2015-0552This paper explores how medicinal plant knowledge of the Waorani (Ecuador) varies with socio-economic and demographic factors. Medicinal plant knowledge was compared at individual and community levels. Semi-structured interviews were performed with 56 informants (men N = 29, women N = 27) between 15 and 70 years old in five Waorani communities located within the Yasuní National Park andWaorani Ethnic Reserve. We found a positive correlation between an informant's medicinal plant knowledge and age, and a negative correlation between informant's medicinal plant knowledge and the years of schooling. Reasons behind these findings are thought to be in the rapid socio-cultural changes of the Waorani due to globalization processes. Increased accessibility to health centers and improved transportation infrastructure result in a loss of ethnobotanical knowledge