Nonlinear Deblurring for Low-Light Saturated Image.

Single image deblurring has achieved significant progress for natural daytime images. Saturation is a common phenomenon in blurry images, due to the low light conditions and long exposure times. However, conventional linear deblurring methods usually deal with natural blurry images well but result in severe ringing artifacts when recovering low-light saturated blurry images.

Monochromatic light-enhanced photocatalytic CO reduction based on exciton properties of two-dimensional lead halide perovskites.

Converting CO into valuable solar fuels through photocatalysis has been considered a green and sustainable technology that is promising for alleviating global warming and providing energy in an environmentally friendly manner. However, traditional photocatalysts generally suffer from low surface-reactive reaction sites, inefficient light harvesting and rapid recombination of electron-hole pairs. Lead halide perovskite materials have been considered ideal semiconductor photocatalysts for photocatalytic CO reduction due to their tunable band gaps, strong light absorption, and low cost.

Habitat heterogeneity induces regional differences in sediment nitrogen fixation in eutrophic freshwater lake.

Biological nitrogen fixation (BNF) in sediments is an important source of bioavailable nitrogen in aquatic systems. However, the effect of habitat change caused by eutrophication on nitrogen fixation within sediments is still unclear. In this study, nitrogen fixation rates and diazotroph diversities in sediments with heterogeneous ecological status in one eutrophic lake were investigated by using an isotope tracer method and sequencing of nitrogen-fixing (nif) genes.

Needle urethral self-insertion for nine years in an adolescent boy.

Self-insertion of needles into the urethra is rare among children, especially in adolescents with no evident history of mental illness. It is usually an urological emergency condition and needs surgery as soon as possible. The case we report here is a 14 year-old boy with urethral self-insertion of a sewing needle which was lodged in urethra for 9 years.

[Priligy combined with behavioral therapy and psychological counseling for primary premature ejaculation].

Objective: To observe the clinical effect of priligy (dapoxetine hydrochloride) combined with behavioral therapy and psychological counseling in the treatment of primary premature ejaculation (PPE).

Methods: A total of 202 PPE patients diagnosed from 2017 to 2018 were randomized into a control (n = 100) and an experimental group (n = 102), the former treated with oral priligy at 30 mg 1－3 hours before anticipated sexual activity, and the latter by the same medication combined with 30-minute behavioral therapy and psychological counseling once a month for two times. The therapeutic effects were evaluated according to the Premature Ejaculation Profile (PEP) scores of the patients at 1 and 2 months of treatment.

The feasibility of recycling drinking water treatment residue as suspended substrate for the removal of excess P and N from natural water.

Eutrophication of natural water commonly involves the pollution of both P and N. Here, we developed a new application of drinking water treatment residuals (DWTRs) for suspensions that permits the simultaneous removal of excess P and N from natural water and demonstrates that DWTRs recycling can provide a means for eutrophication control. Based on 364-day continuous flow tests, the suspension application of DWTRs effectively adsorbed P from overlying water under various conditions, decreasing total P concentrations from 0.

Benign testicular cavernous hemangioma presenting with acute onset: A case report.

Cavernous hemangioma is a congenital, benign vascular tumor that occurs in the deep dermis and subcutaneous tissue. Testicular cavernous hemangioma is extremely rare, mostly occurring during childhood or adolescence. Testicular cavernous hemangioma is a benign tumor that appears as a slowly growing painless mass.

Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells.

Prostate cancer is a common malignancy with a high mortality rate. Long non‑coding RNA metastasis associated with lung adenocarcinoma transcript 1 (MALAT1) has been reported to serve tumor‑promoting roles. However, the underlying mechanism requires further examination.

Silencing of lncRNA MALAT1 inhibits cell cycle progression via androgen receptor signaling in prostate cancer cells.

Prostate cancer is the second common cancer in men with high morbidity and mortality. Androgen receptor (AR) signaling plays a crucial role in occurrence and development of prostate cancer. In this study, we demonstrated that lncRNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) was increased in prostate cancer cells after androgen stimulation, as well as AR.

[Protective effect of lycopene on human spermatozoa during cryopreservation and its mechanism].

Objective: To investigate the protective effect of lycopene against cryopreservation injury of post-thawing human sperm and its mechanism.

Methods: Semen samples were collected from 25 volunteers, each sample equally divided into four parts to be cryopreserved with cryoprotectant only (Ly0 control) or cryoprotectant + lycopene at the concentrations of 2 (Ly2), 5 (Ly5), and 10 µmol/L (Ly10), respectively. Before and after thawing, the semen samples were subjected to computer-assisted semen analysis ( CASA) for sperm kinematics, flow cytometry for sperm apoptosis, thiobarbituric acid assay for malondialdehyde (MDA) concentration, and JC-1 fluorescent staining for the sperm mitochondrial membrane potential (MMP).

Impressive laser intensity increase at the trailing stage of femtosecond laser filamentation in air.

The longitudinal distribution of the laser peak intensity inside a half meter long femtosecond laser filament in air is studied by measuring the signal ratio of two nitrogen fluorescence lines, 391 nm and 337 nm. The experimental results reveal that laser peak intensity initially remains almost constant (~4.3 × 10(13) W/cm2) inside the filament.

Multiple filamentation generated by focusing femtosecond laser with axicon.

Multiple filamentation has been observed when focusing a femtosecond laser pulse into a methanol solution with an axicon. It is found that multiple long filaments are located on the central spot and ring structures of the quasi-Bessel beam created by the axicon. Since the quasi-Bessel profile is determined by the axicon properties, the axicon has been suggested as a simple optics to control multiple filaments.

Simple method of measuring laser peak intensity inside femtosecond laser filament in air.

Measurement of laser intensity inside a femtosecond laser filament is a challenging task. In this work, we suggest a simple way to characterize laser peak intensity inside the filament in air. It is based on the signal ratio measurement of two nitrogen fluorescence lines, namely, 391 nm and 337 nm.

Portraying polarization state of terahertz pulse generated by a two-color laser field in air.

By using an electro-optic sampling technique, the instantaneous field vector of the terahertz (THz) pulse generated by mixing a near-IR femtosecond pulse and its second harmonic in air has been studied. The polarization of the investigated THz pulse is found to be predominantly linear and orthogonal to that of the second harmonic, revealing the major role of chi((3))(xyxy) during the four-wave mixing process.