The Cauchy Integral Operator on the Predual of a Morrey Space

We show that the Cauchy integral operator is bounded from Hp,φ(R1) (the predual of a Morrey space) to hp,φ(R1) (the local version of Hp,φ(R1)). To prove our theorem we will introduce generalized atoms and consider a variant of “Tb theorem.&#8221

The Cauchy Integral Operator on the Predual of a Morrey Space

Abstract We show that the Cauchy integral operator is bounded from (the predual of a Morrey space) to (the local version of ). To prove our theorem we will introduce generalized atoms and consider a variant of "Tb theorem."</p

Rehabilitation nursing for motor functional recovery of acute ischaemic stroke: study protocol for a randomised controlled trial

Introduction Stroke is the second-leading cause of death and disability in the world, and patients with stroke often suffer from functional impairments and need rehabilitation. Notably, there is much evidence that rehabilitation can lead to better mortality and morbidity outcomes. The evidence for the effectiveness of rehabilitation nursing, however, is limited. Thus, this study seeks to explore whether rehabilitation nursing is not inferior to usual rehabilitation for motor functional recovery in patients with acute ischaemic stroke.Methods and analysis We will conduct an assessor-blinded parallel randomised controlled trial of patients who meet the inclusion criteria after stratification by weighted corticospinal tract lesion load. The experimental group will receive rehabilitation nursing by trained and qualified nurses (seven consecutive days, two sessions per day, 30 min each session). The control group will receive usual rehabilitation provided by therapists (seven consecutive days, two sessions per day, 30 min each session). The primary outcome measures are the Motor Assessment Scale, the Fugl-Meyer Assessment and the Action Research Arm Test. The secondary outcome measures are the modified Rankin Scale, the modified Barthel Index and the National Institute of Health Stroke Scale. Primary and secondary outcome assessment will be performed before and after the intervention, and secondary outcome be assessed at 4 and 12 weeks follow-up. We will recruit 224 patients within a period of 12–18 months from a hospital in southeastern China.Ethics and dissemination The study was approved by the Human Research Ethics Committee from the corresponding author’s hospital (approval Number is Ethical Review Study No. 2018 - 112). Peer-reviewed journals and presentations at national and international conferences will be used to disseminate the results.Trial registration number NCT03702452

Assessment of the Genetic Relationship and Population Structure in Oil-Tea Camellia Species Using Simple Sequence Repeat (SSR) Markers

Oil-tea camellia trees, the collective term for a class of economically valuable woody oil crops in China, have attracted extensive attention because of their rich nutritional and pharmaceutical value. This study aimed to analyze the genetic relationship and genetic diversity of oil-tea camellia species using polymorphic SSR markers. One-hundred and forty samples of five species were tested for genetic diversity using twenty-four SSR markers. In this study, a total of 385 alleles were identified using 24 SSR markers, and the average number of alleles per locus was 16.0417. The average Shannon&rsquo;s information index (I) was 0.1890, and the percentages of polymorphic loci (P) of oil-tea camellia trees were 7.79&minus;79.48%, indicating that oil-tea camellia trees have low diversity. Analysis of molecular variance (AMOVA) showed that the majority of genetic variation (77%) was within populations, and a small fraction (23%) occurred among populations. Principal coordinate analysis (PCoA) results indicated that the first two principal axes explained 7.30% (PC1) and 6.68% (PC2) of the total variance, respectively. Both UPGMA and PCoA divided the 140 accessions into three groups. Camellia oleifera clustered into one class, Camellia vietnamensis and Camellia gauchowensis clustered into one class, and Camellia crapnelliana and Camellia chekiangoleosa clustered into another class. It could be speculated that the genetic relationship of C. vietnamensis and C. gauchowensis is quite close. SSR markers could reflect the genetic relationship among oil-tea camellia germplasm resources, and the results of this study could provide comprehensive information on the conservation, collection, and breeding of oil-tea camellia germplasms

Design, Synthesis and Biological Evaluation of Jahanyne Analogs as Cell Cycle Arrest Inducers

Jahanyne, a lipopeptide with a unique terminal alkynyl and OEP (2-(1-oxo-ethyl)-pyrrolidine) moiety, exhibits anticancer activity. We synthesized jahanyne and analogs modified at the OEP moiety, employing an &alpha;-fluoromethyl ketone (FMK) strategy. Preliminary bioassays indicated that compound 1b (FMK&ndash;jahanyne) exhibited decreased activities to varying degrees against most of the cancer cells tested, whereas the introduction of a fluorine atom to the &alpha;-position of a hydroxyl group (2b) enhanced activities against all lung cancer cells. Moreover, jahanyne and 2b could induce G0/G1 cell cycle arrest in a concentration-dependent manner

Impedance monitoring of cell adhesion and growth on mesoporous membrane

We present a microdevice configuration for impedance monitoring of adherent cells cultured on the surface of mesoporous membranes. The device fabrication was based on a 3 layer PDMS process which allows easy integration of microelectrodes in close proximity to cultured cells. The measurements were performed with HeLa cells on 30 nm diameter membranes of polycarbonate and embedded Pt and Ag/AgCl electrodes. As expected, the impedance of the cell-membrane assembly changes rapidly during the first 30 min due to cell adhesion and it continuously increases until cell confluence at day 5. This membrane based device configuration should be useful for accurate and real-time monitoring in cell adhesion, growth and migration studies.4 page(s

Induction of Axillary Bud Swelling of <i>Hevea brasiliensis</i> to Regenerate Plants through Somatic Embryogenesis and Analysis of Genetic Stability

To overcome rubber tree (RT) tissue culture explant source limitations, the current study aimed to establish a new Hevea brasiliensis somatic embryogenesis (SE) system, laying the technical foundation for the establishment of an axillary-bud-based seedling regeneration system. In this study, in vitro plantlets of Hevea brasiliensis Chinese Academy of Tropical Agricultural Sciences 917 (CATAS 917) were used as the experimental materials. Firstly, the optimum conditions for axillary bud swelling were studied; then, the effects of phenology, the swelling time of axillary buds (ABs), and medium of embryogenic callus induction were studied. Plantlets were obtained through somatic embryogenesis. Flow cytometry, inter-simple sequence repeat (ISSR molecular marker) and chromosome karyotype analysis were used to study the genetic stability of regenerated plants along with budding seedlings (BSs) and secondary somatic embryo seedlings (SSESs) as the control. The results show that the rubber tree’s phenology period was mature, and the axillary bud induction rate was the highest in the 2 mg/L 6-benzyladenine (6-BA) medium (up to 85.83%). Later, 3-day-old swelling axillary buds were used as explants for callogenesis and somatic embryogenesis. The callus induction rate was optimum in MH (Medium in Hevea) + 1.5 mg/L 2,4-dichlorophenoxyacetic acid (2,4-D) + 1.5 mg/L 1-naphthalene acetic acid (NAA) + 1.5 mg/L Kinetin (KT) + 70 g/L sucrose (56.55%). The regenerated plants were obtained after the 175-day culture of explants through callus induction, embryogenic callus induction, somatic embryo development, and plant regeneration. Compared with the secondary somatic embryo seedling control, axillary bud regeneration plants (ABRPs) were normal diploid plants at the cellular and molecular level, with a variation rate of 7.74%

Comparison of Clinical Characteristics, Therapy, and Short-Term Prognosis between Blunt and Penetrating Abdominal Trauma: A Multicentric Retrospective Cohort Study

Objective. Large-scale studies on the characteristics and management of abdominal trauma in megacities in China are lacking. The aim of this study was to analyze and present the clinical patterns and treatment status of abdominal trauma in regional medical centers. Methods. Cases of abdominal trauma treated at seven medical centers in Beijing from 2010 to 2021 were collected. Clinical information about age, sex, injury cause, geographic distribution, abbreviated injury scale/injury severity score (AIS/ISS) value, injury-hospital time, preoperative time, surgically identified organ injuries, type of surgery, causes of reoperation and 90-day mortality was included in this study. Clinical characteristics, treatment methods, and short-term prognoses (90-days survival) were compared between blunt abdominal trauma (BAT) and penetrating abdominal trauma (PAT) cases. Non-normally distributed data are described as medians (IQR), and the Mann‒Whitney U test was performed; qualitative data were analyzed using the X2 test. Univariate and multivariate survival analyses were performed by the Cox proportional hazards model. Results. A total of 553 patients (86.98% male) with a median age of 36.50 (27.00–48.00) years were included. The BAT group had a significantly higher proportion of serious injury (P=0.001), lower initial hemoglobin level (P=0.001), and a lower laparoscopy surgery rate (P=0.044) compared to the PAT group. Additionally, more BAT cases were from the area around Beijing (P=0.008) and a longer injury-regional hospital time (10.47 (5.18–22.51) hours vs. 7.00 (3.80–15.38) hours, P=0.001). In the hollow viscus injury subgroup, the BAT group had a significantly longer injury-regional hospital time and preoperative time compared to the PAT group (injury-regional hospital time: 10.23 (6.00–21.59) hours vs. 7.07 (3.99–13.85) hours, P=0.002; preoperative time: 3.02 (2.01–5.58) hours vs. 2.81 (1.85–3.63) hours, P=0.047). The overall 90-day mortality was 11.9%, and longer injury-regional hospital time (HR: 1.01, 95% CI: 1.00–1.02, P=0.008), receipt of ICU treatment (HR: 4.69, 95% CI: 2.54–8.65, P=0.001), and severe ISSs (ISS > 25 vs. ISS < 16, HR: 2.78, 95% CI: 1.38–5.601, P=0.004) had a worse impact on survival. Conclusion. More patients with BAT were transferred to higher-level hospital, leading to significantly longer prehospital and preoperation time. In the subgroup of hemodynamically stable individuals, more patients with BAT experienced hollow viscus injuries. For those patients, aggressive diagnostic laparoscopic exploration may be beneficial. Patients with longer injury-regional hospital intervals, the need for ICU care, and higher injury severity scores (ISSs) suffered from worse prognoses