We give direct experimental evidence for the observation of the full transverse self-modulation of a long, relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a periodic density modulation resulting from radial wakefield effects. We show that the modulation is seeded by a relativistic ionization front created using an intense laser pulse copropagating with the proton

AWAKE is a proton-driven plasma wakefield acceleration experiment. We show that the experimental setup briefly described here is ready for systematic study of the seeded self-modulation of the 400 GeV proton bunch in the 10 m-long rubidium plasma with density adjustable from 1 to 10×10 14 cm −3 . We show that the short laser pulse used for ionization of the rubidium vapor propagates all the way along the column, suggesting full ionization of the vapor. We show that ionization occurs along the proton bunch, at the laser time and that the plasma that follows affects the proton bunch.

Landmarks defined in this clinical trial can be used in patients for obturator nerve block with ultrasound guidance.

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Background Coronavirus disease 2019 (COVID-19) usually leads to a mild infectious disease course in children, while serious complications may occur in conjunction with both acute infection and neurological symptoms, which have been predominantly reported in adults. The neurological complications in these patients vary based on patient age and underlying comorbidities. Data on clinical features, particularly neurological features, and prognostic factors in children and adolescents are limited. The present study provides a concise overview of neurological complications in pediatric COVID-19 cases. Materials and Methods The retrospective study reviewed medical records of all patients who were admitted to our hospital and were diagnosed with COVID-19 by real-time reverse-transcription polymerase-chain-reaction (RT-PCR) assay between March 11, 2020 and January 30, 2021. Patients with a positive PCR result were categorized into two groups: Out Patient Departments (OPD) patients and In Patient Departments (IPD). Results Of the 2,530 children who underwent RT-PCR during the study period, 382 (8.6%) were confirmed as COVID-19 positive, comprising 188 (49.2%) girls and 194 (50.8%) boys with a mean age of 7.14±5.84 (range, 0-17) years. Neurological complications that required hospitalization were present in 34 (8.9%) patients, including seizure (52.9%), headache (38.2%), dizziness (11.1%) and meningoencephalitis (%5.8). Conclusion The results indicated that neurological manifestations are not rare in children suffering from COVID-19. Seizures, headaches, dizziness, anosmia, ageusia, and meningoencephalitis major neurological manifestations during acute COVID-19 disease. Although seizures were the most common cause of hospitalization in IPD patients, the frequency of meningoensalitis was quite high. Seizures were observed as febrile seizures for children under six years of age and afebrile seizures for those over 6 years of age. Febrile seizure accounted for half of all seizure children.

In total, 151 newly diagnosed patients with smear-positive pulmonary tuberculosis were studied. The mean time from the onset of symptoms to the first visit to a physician was 46.4 days; the mean referral delay was 28.9 days; the mean delay in diagnosis was 2.4 days; and the mean delay in treatment initiation was 0.8 days. There was a delay in consulting a physician by 49% of patients. A low index of suspicion for tuberculosis on the part of the physician and healthcare system and laboratory delays were the most common reasons for delays in diagnosis.

Patellar malalignment is the most important reason for anterior knee pain. Patellar alignment is commonly determined by the measurement of the quadriceps (Q) angle. In this study, our primary aim was to investigate the Q angle difference between healthy individuals with and without joint hypermobility. The other objectives were to compare the Q angle values, which were measured in supine and upright positions, to determine hypermobility frequency among healthy males in a certain population, and to investigate the correlation between the existent skeletal deformities and Beighton score levels. Two hundred fifty-three healthy male college students were examined for hypermobility and skeletal deformities. According to the Beighton scoring system, three groups (n=20) were formed, and Q angle measurements were performed on the 60 individuals in both supine and upright positions. In the comparison of the groups, the mean Q angle values in healthy hypermobile individuals were found to be significantly higher than that of the nonhypermobile ones (p<0.05). No statistical difference was found between Q angle values in supine and upright positions (p>0.05). The frequency of joint hypermobility (Beighton score 4 or more) was found to be 29.25% in this population. No correlation was determined between existent skeletal deformities and Beighton score values (p>0.05). In conclusion, the Q angle evaluation among healthy hypermobile individuals may have a prognostic value for probable knee pathologies that may appear in the future.

HighlightsPrimary ovarian leiomyoma is one of the rarest solid tumours of the ovary.Many patients with ovarian leiomyomas are nulligravidas.Differential diagnosis can be difficult from ovarian solid tumours.The diffuse strong positive staining for SMA is characteristic of leiomyoma.Unilateral and benign tumours can be treated with unilateral salpingo-oopherectomy.