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Increased Sensitivity in VOC Detection by Using a Novel Photoinduced Multiple Ionization Mass Spectrometry.

Proton transfer reaction mass spectrometry (PTR-MS) is an important online monitoring technique for volatile organic compounds (VOCs). VOCs have the characteristics of many types, rapid change, and low concentration. Enhancing the detection sensitivity and expanding the detection range of VOCs have been key challenges in PTR-MS research. In this work, we have developed and characterized a novel photoinduced multiple ionizations (PMI) source, which consists of four direct current (DC) vacuum ultraviolet Kr lamps and a V-shaped focusing quadrupole ion funnel (FQ-IF) drift tube. The novel PMI sou…

The impact of intervertebral disc hydration on the photothermal responses and carbonization properties in low-energy laser therapy.

Percutaneous Laser Disc Decompression (PLDD) is a minimally invasive treatment for lumbar disc herniation (LDH), but its effectiveness can b … cs from adult pig spines (L2-L5) were used. Discs with poor and rich water content were prepared by vacuum freeze-drying and saline soaking, respectively, with untreated discs serving as controls. Three groups-poor, normal, and rich water content-were exposed to laser irradiation at 1 W, 2 W, and 3 W. Images of the discs were captured, and the irradiated …

"Risk factors for early-onset adjacent segment disease at L5-S1 segment after isolated L4-5 lumbar fusion surgery".

PURPOSE: This study aimed to elucidate the pre- and postoperative radiological risk factors for L5-S1 adjacent segment disease (ASD) after i … neration of the L5-S1 disc was evaluated according to Pfirrmann's classification and intervertebral vacuum phenomenon (VP). RESULTS: L5-S1 ASD was found in 9 patients at 1 year postoperatively. Univariate analyses revealed that lower BMI; Meyerding grade > 1; preoperative L1SVA > L4SVA; and postoperative DL, L1SVA > L4SVA, and ΔDH were the risk factors …

A Novel Full-percutaneous Trans-Kambin Lumbar Interbody Fusion (pTLIF) With a Large-footprint Interbody Cage: Step-by-Step Surgical Technique.

STUDY DESIGN: Surgical technique presentation. OBJECTIVES: To introduce a novel full-percutaneous trans-Kambin transforaminal lumbar interb … he lumbar spine shows a spondylolisthesis at L4/L5 and degenerative disks at L3/L4 and L5/S1 with a vacuum sign and severe foraminal and central canal stenosis. Full-endoscopic/percutaneous trans-Kambin TLIF was performed at L5/S1 with a large-footprint expandable interbody cage with posterior screw fixation from L3 to S1. RESULTS: Postoperatively, the …

Intraductal papilloma of the breast: low risk, but handle with care.

INTRODUCTION: This study aims to investigate the management of patients with breast papillomas without atypia diagnosed after ultrasound-guided vacuum-assisted breast biopsy (VABB). MATERIALS AND METHODS: This retrospective, single-centre study analysed 179 patients diagnosed with benign papillomas without atypia between 1999 and 2022. Of these, 32 patients underwent surgery, while the remaining were managed with active surveillance. Diagnostic underestimation was assessed in the surgical group. The association between post-biopsy residual lesions and subsequent surgical management (surgery v…

Comparing negative pressure wound therapy to conventional wound healing in post op fistulectomy patients.

INTRODUCTION: Fistulectomy, though effective for treating lower anal canal fistulas, is associated with longer operative times, larger incisions, delayed wound healing, and a higher risk of flatus incontinence. Negative Pressure Wound Therapy (NPWT), which applies controlled vacuum pressure to promote wound healing, may offer a solution to these challenges. This study evaluates the effectiveness of NPWT in enhancing postoperative recovery following fistulectomy. MATERIALS AND METHODS: This prospective study included 20 patients who underwent fistulectomy at Saveetha Medical College and Hospit…

Подготовка, характеристика и испытание имплантируемых устройств на основе коллектора, загруженных тизанидином и лидокаином.

Множественный склероз является хроническим нейромундологическим расстройством, которое вызывает постепенную инвалидность, главным образом у молодых людей. Она ложится тяжелым бременем на системы здравоохранения из-за высоких расходов на лекарства и потребностей в долгосрочном уходе. Интенсивные устройства являются перспективной альтернативой для обеспечения устойчивых доз лекарств при лечении хронических заболеваний. Это исследование представляет собой новый подкожный имплантат длительного действия для доставки двух наркотиков: тизанидин (TZ) для управления спастичностью и лидокаин (LD) для по

Совпадение в аннотации оригинала
Multiple sclerosis is a chronic neuroimmunological disorder that causes progressive disability, primarily in young adults. It places a signi … e developed with TZ in the core and LD in the shell. Two fabrication methods-direct compression and vacuum compression moulding (VCM)-were evaluated for TZ-loaded pellets (3 mm diameter, ~ 10 mm length) using TZ base and TZ hydrochloride. Pellets were encapsulated inside a biodegradable polycaprolactone (PCL) tubular membrane to control drug release. Dir …

Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples.

OBJECTIVES: To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to … taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar …

Economic burden of pelvic sepsis after anastomotic leakage following rectal cancer surgery: A retrospective cost-of-illness analysis.

AIM: Anastomotic leakage following rectal cancer surgery remains a challenging complication, with a nonhealing rate of approximately 50% at … he general ward and 0.8 days in the intensive care unit. Common reinterventions included endoscopic vacuum sponge changes (n = 153), stoma closures (n = 59) and radiological abscess drainages (n = 51). Total costs did not differ significantly between nonrestorative surgery and restorative surgery (mean = €31 950 vs. €30 362, respectively; p = 0.893). CO …

Enhancing Antimicrobial Efficacy of Sandalwood Essential Oil Against Salmonella enterica for Food Preservation.

The growing emphasis on food safety and healthier lifestyles, driven by industrial expansion and scientific priorities, has highlighted the … ofiles on both glass and plastic surfaces. SAEO also showed significant anti-Salmonella activity on vacuum-packed carrot slices. SAEO outperformed the control samples. The insecticidal activity against Megabruchidius dorsalis was also studied in this work, and the best insecticidal activity was found at the highest concentrations. These findings indicate …

Comparison of venturi and peristaltic based phacoemulsification efficiency in routine femtosecond laser cataract surgery.

OBJECTIVE: To compare the efficiency of venturi and peristaltic pump phacoemulsification systems in patients undergoing routine laser cataract surgery. DESIGN: Single center, nonrandomized clinical study. PARTICIPANTS: The study compared consecutive eyes with moderate nuclear sclerosis undergoing routine laser cataract surgery at the Outpatient Eye Center, Mercy Health System, Springfield, MO, USA. METHODS: Each surgery used the same femtosecond laser settings. Surgeries were performed with either a venturi or peristaltic vacuum system by a single surgeon (WJS). The EFX, percent power, ultr…

Management of Patients with Breast Biopsy under Anti-Coagulation or Anti-Platelet Therapy: Results of a Survey of German Experts.

INTRODUCTION: Pre-therapeutic histologic diagnosis through image-guided core needle biopsy (CNB) or vacuum-assisted biopsy (VAB) for suspicious breast findings is a standard procedure. Despite the moderate risk of bleeding, a significant proportion of patients are on temporary or permanent anti-coagulation therapy (ACT) or anti-platelet therapy (APT). Currently, there are no established guidelines for managing biopsies in such patients, leading to varying approaches in clinical practice. METHODS: An online survey was conducted among all members of the breast ultrasound working group at the Ge…

Blood self-sampling devices: innovation, interpretation and implementation in total lab automation.

The introduction of the vacuum tube in 1949 revolutionized blood collection, significantly improving sample quality and patient comfort. Over the past 75 years, laboratory diagnostics have evolved drastically, from manual to automated processes, reducing required test volumes by over 1,000 times. Despite these advancements, venous blood collection presents logistical challenges, including centralized scheduling and a large volume of biological waste due to the imbalance between the needed blood volume (often very little) and the collected volume (often in excess). The COVID-19 pandemic further…

Green application of surfactant modified silica as effective sorbent for extraction and preconcentration of sulfonamide residues in environmental water and honey samples.

Micro-solid phase extraction (µ-SPE) using surfactant coated silica for extraction and preconcentration of sulfonamide residues at trace levels in environmental water and honey samples prior their analysis by high performance liquid chronatography coupled with photodiode array detector (HPLC-PDA). The sample solution were dispersed in a small amounts of solid sorbent by vacuum manifold for sample preparation, and extraction occurred by adsorption in a short time. Finally, the analytes were subsequently desorbed using an appropriate solvent. The pure and coated silica were physicochemically and…

Microsphere lens array embedded microfluidic chip for SERS detection with simultaneous enhancement of sensitivity and stability.

Surface enhanced Raman spectroscopy (SERS) utilizes the fingerprint features of molecular vibrations to identify and detect substances. Howe … we proposed a SERS microfluidic chip with barium titanate microspheres array (BTMA) embedded using vacuum self-assembled hot-pressing method for SERS detection with simultaneous enhancement of sensitivity and stability. Due to photonic nano-jets and directional antenna effects, high index microspheres are perfect micro-lens for effective light focusing …

Prevalence and Associated Factors of Anal Incontinence at Six Weeks after Vaginal Delivery: A Cross-sectional Study at Three Teaching Hospitals in Addis Ababa, Ethiopia.

BACKGROUND: Anal incontinence is defined as the involuntary loss of fecal material or flatus. The reported prevalence at 6 weeks postpartum … ontaneous vaginal delivery was about 5 times higher for forceps (AOR= 4.93 (95%CI:1.48, 16.44)) and vacuum (AOR= 5.53 (95%CI:1.18, 25.96)) deliveries. Second stage of labor duration of >120 minutes had more than 4 times odds of developing incontinence compared to duration of <30 minutes (AOR= 4.79 (95%CI:1.01, 22.82)). Second degree perineal tear was the …

Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study.

Renewable ("green") hydrogen production through direct photoelectrochemical (PEC) water splitting is a potential key contributor to the sust … ructure and reveals the presence of at least nine distinct states between the valence band edge and vacuum energy, including a valence band state, a surface defect state pinning the Fermi level, six unoccupied surface resonances within the conduction band, as well as a cluster of states about 1.6 eV above the CBM, identified as a bulk-to-surface transiti …

Surgical Algorithm of Poland Syndrome Based on Thorax, Breast, and Nipple-areola Complex Classification.

BACKGROUND: Poland syndrome (PS) is a rare congenital syndrome characterized by unilateral pectoralis major muscle defect. In 2016, we propo … fat grafting, tissue expanders, and breast and pectoral implants. Conservative treatments included vacuum bell and corset. RESULTS: Half of the patients had no thoracic skeletal defect (T1), but all had soft-tissues defects. Nineteen patients required thoracoplasty, all of whom experienced T downstaging after treatment, and 90% were postoperatively rec …

Obstetric risk factors for levator ani muscle avulsion: A systematic review and meta-analysis.

OBJECTIVES: Women have a 11% lifetime risk of undergoing surgery for vaginal prolapse. Levator ani muscle (LAM) avulsion is one etiological … ified were forceps (OR 6.25 [4.33 - 9.0]), obstetric anal sphincter injuries (OR 3.93 [2.85-5.42]), vacuum (OR 2.41 [1.40-4.16]), and maternal age (OR 1.06 [1.02-1.10]). CONCLUSIONS: This is the first meta-analysis of both modifiable and non-modifiable risk factors associated with LAM avulsion. This information could be used to develop a clinically appl …

An elliptical nanoantenna array plasmonic metasurface for efficient solar energy harvesting.

Plasmonic metasurfaces with subwavelength nanoantenna arrays have attracted much attention for their ability to control and manage optical p … achieves over 90% optical absorption across a broad range of wavelengths of 300-1116 nm in air (or vacuum) environments and performs effectively under water conditions for solar energy harvesting in a range of wavelengths of 300-1436 nm, and therefore can serve as a solar evaporator. Combining refractory plasmonic titanium nitride (TiN) and semiconducto …