Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 18 de 18
Filter
Add more filters










Publication year range
1.
Phys Rev Lett ; 132(6): 065102, 2024 Feb 09.
Article in English | MEDLINE | ID: mdl-38394591

ABSTRACT

On December 5, 2022, an indirect drive fusion implosion on the National Ignition Facility (NIF) achieved a target gain G_{target} of 1.5. This is the first laboratory demonstration of exceeding "scientific breakeven" (or G_{target}>1) where 2.05 MJ of 351 nm laser light produced 3.1 MJ of total fusion yield, a result which significantly exceeds the Lawson criterion for fusion ignition as reported in a previous NIF implosion [H. Abu-Shawareb et al. (Indirect Drive ICF Collaboration), Phys. Rev. Lett. 129, 075001 (2022)PRLTAO0031-900710.1103/PhysRevLett.129.075001]. This achievement is the culmination of more than five decades of research and gives proof that laboratory fusion, based on fundamental physics principles, is possible. This Letter reports on the target, laser, design, and experimental advancements that led to this result.

2.
Eur Rev Med Pharmacol Sci ; 27(9): 3823-3832, 2023 05.
Article in English | MEDLINE | ID: mdl-37203806

ABSTRACT

OBJECTIVE: This study aimed to assess the effect of radial shock wave and ultrasound therapy combined with traditional physical therapy on foot function and range of motion in chronic plantar fasciitis. PATIENTS AND METHODS: Sixty-nine participants with chronic plantar fasciitis (25-56 years) were allocated randomly into three groups. Group (A) received ultrasound (US) therapy plus conventional physical therapy exercises (in the form of stretching, strengthening exercise, and deep friction massage), Group (B) received a radial shock wave (RSW) therapy plus conventional physical therapy exercises, and Group (C) received a combination of both RSW and US therapy in addition to conventional physical therapy exercises, with 3 sessions per week for US therapy and one session for RSW therapy, in addition to 45 minutes of exercises for all groups for 4 consecutive weeks. Foot function was assessed using the foot function index (FFI), and ankle dorsiflexion range of motion was measured using the Baseline® bubble inclinometer at baseline and 4 weeks following treatment. RESULTS: ANOVA revealed significant differences (p<0.05) in the measured outcomes among the groups after treatment. Tukey's honest significant difference post-hoc test demonstrated a highly statistically significant (p<0.001) improvement in the assessed outcomes of group C in the post-intervention settings when compared to the other groups. After 4 weeks of intervention, the mean (SD) of FFI in groups A, B, and C were (64.54±4.91, 61.93±4.17, and 45.16±4.57) respectively, and the active range of motion (ROM) of the ankle dorsiflexion were (35.27±3.22, 36.59±2.91, and 41.85±3.04) respectively. CONCLUSIONS: The addition of RSW to US with the conventional physical therapy program improved foot function and ankle dorsiflexion range of motion significantly for patients with chronic plantar fasciitis.


Subject(s)
Fasciitis, Plantar , Ultrasonic Therapy , Humans , Fasciitis, Plantar/diagnostic imaging , Fasciitis, Plantar/therapy , Prospective Studies , Exercise Therapy , Physical Therapy Modalities , Treatment Outcome
3.
Phys Rev Lett ; 129(7): 075001, 2022 Aug 12.
Article in English | MEDLINE | ID: mdl-36018710

ABSTRACT

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly increasing temperature. In inertially confined fusion, ignition is a state where the fusion plasma can begin "burn propagation" into surrounding cold fuel, enabling the possibility of high energy gain. While "scientific breakeven" (i.e., unity target gain) has not yet been achieved (here target gain is 0.72, 1.37 MJ of fusion for 1.92 MJ of laser energy), this Letter reports the first controlled fusion experiment, using laser indirect drive, on the National Ignition Facility to produce capsule gain (here 5.8) and reach ignition by nine different formulations of the Lawson criterion.

4.
Food Chem ; 336: 127616, 2021 Jan 30.
Article in English | MEDLINE | ID: mdl-32763733

ABSTRACT

This study is an example of apple by-products (AP) recycling through a designed fermentation by selected autochthonous Lactobacillus plantarum AFI5 and Lactobacillus fabifermentans ALI6 used singly or as binary cultures with the selected Saccharomyces cerevisiae AYI7. Compared to Raw-, Unstarted- and Chemically Acidified-AP, Fermented-AP promoted the highest levels of total and insoluble dietary fibers, DPPH scavenging capacity, and free phenolics. The binary culture of L. plantarum AFI5 and S. cerevisiae AYI7 had the best effect on the bioavailability phenolic compounds as resulted by the LC-MS/MS validated method. The accumulation of phenolic acids derivatives highlighted the microbial metabolism during AP fermentation. Bio-converted phenolics were likely responsible for the increased DPPH scavenging capacity. The potential health-promoting effects of Fermented-AP were highlighted using Caco-2 cells. With variations among single and binary cultures, fermented-AP counteracted the inflammatory processes and the effects of oxidative stress in Caco-2 cells, and preserved the integrity of tight junctions.


Subject(s)
Dietary Supplements/analysis , Malus/chemistry , Phenols/chemistry , Anti-Inflammatory Agents/analysis , Anti-Inflammatory Agents/chemistry , Anti-Inflammatory Agents/pharmacology , Antioxidants/chemistry , Batch Cell Culture Techniques , Caco-2 Cells , Chromatography, High Pressure Liquid , Humans , Lactobacillus/growth & development , Lactobacillus/metabolism , Malus/metabolism , Oxidative Stress/drug effects , Phenols/analysis , Phenols/pharmacology , Reactive Oxygen Species/metabolism , Saccharomyces cerevisiae/growth & development , Saccharomyces cerevisiae/metabolism , Tandem Mass Spectrometry
6.
Food Chem ; 317: 126384, 2020 Jul 01.
Article in English | MEDLINE | ID: mdl-32078997

ABSTRACT

This study investigated the capability of selected autochthonous lactic acid bacteria to enrich the portfolio of bioactive compounds of avocado fruit (Persea americana Mill.), with the perspective of producing dietary supplements or pharmaceutical preparations. Fermented avocado puree resulted in high levels of total free amino acids. Fermentation also led to a marked increase of antioxidant activity, with the highest levels found in water and hexane soluble extracts. Bio-converted phenolic compounds and fatty acids derivatives resulting from bacterial metabolism were likely responsible for the increased antioxidant activity. Fermentation caused the fortification of avocado puree with some hydroxy fatty acids, which deserved marked attention due to their health-promoting activities. Oleic and linoleic acids were highly metabolized by Lactobacillus plantarum AVEF17, leading to high levels of mono, di-, and tri-hydroxy-octadecenoic acids.


Subject(s)
Antioxidants/metabolism , Fatty Acids/chemistry , Lactic Acid/metabolism , Lactobacillus plantarum/metabolism , Persea/chemistry , Phenols/chemistry , Fermentation , Fruit/chemistry , Linoleic Acid/metabolism , Oleic Acid/metabolism , Oleic Acids/metabolism , Plant Extracts/chemistry
7.
Appl Opt ; 55(16): 4277-81, 2016 Jun 01.
Article in English | MEDLINE | ID: mdl-27411175

ABSTRACT

Nanomaterials have ignited new interest due to their distinctive electronic, mechanical, and optical properties. Zinc oxide nanostructures are fabricated into thin film and then inserted between two fiber ferrules to act as a saturable absorber (SA). The modulation depth and insertion loss of the SA are 5% and 3.5 dB, respectively. When the ZnO-SA is incorporated into the laser cavity, a stable Q-switched pulse tunable from 1536 to 1586 nm (50 nm range) with pulse energy up to 46 nJ was observed. Our result suggests that ZnO is a promising broadband SA to generate passively Q-switched fiber lasers.

8.
Histopathology ; 64(2): 293-305, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24330150

ABSTRACT

AIMS: Immunohistochemistry plays a pivotal role in cancer differential diagnostics. To identify the primary tumour from a metastasis specimen remains a significant challenge, despite the availability of an increasing number of antibodies. The aim of the present study was to provide evidence-based data on the diagnostic power of antibodies used frequently for clinical differential diagnostics. METHODS AND RESULTS: A tissue microarray cohort comprising 940 tumour samples, of which 502 were metastatic lesions, representing tumours from 18 different organs and four non-localized cancer types, was analysed using immunohistochemistry with 27 well-established antibodies used in clinical differential diagnostics. Few antibodies, e.g. prostate-specific antigen and thyroglobulin, showed a cancer type-related sensitivity and specificity of more than 95%. A majority of the antibodies showed a low degree of sensitivity and specificity for defined cancer types. Combinations of antibodies provided limited added value for differential diagnostics of cancer types. CONCLUSIONS: The results from analysing 27 diagnostic antibodies on consecutive sections of 940 defined tumours provide a unique repository of data that can empower a more optimal use of clinical immunohistochemistry. Our results highlight the benefit of immunohistochemistry and the unmet need for novel markers to improve differential diagnostics of cancer.


Subject(s)
Antibodies , Biomarkers, Tumor/analysis , Neoplasms/diagnosis , Humans , Immunohistochemistry , Sensitivity and Specificity
9.
J Obstet Gynaecol Res ; 39(10): 1484-7, 2013 Oct.
Article in English | MEDLINE | ID: mdl-23855432

ABSTRACT

We report a case of a 6-year-old girl with primary Burkitt's lymphoma (BL) of endometrium and bilateral ovaries of 1-month duration. To the best of our knowledge, few cases of childhood primary BL of bilateral ovaries have been reported worldwide. However, extensive search of the published work did not reveal any case of primary BL of endometrium and both ovaries. Although rare, BL is a potentially curable malignancy with good prognosis.


Subject(s)
Burkitt Lymphoma/pathology , Endometrial Neoplasms/pathology , Ovarian Neoplasms/pathology , Ovary/pathology , Uterus/pathology , Child , Female , Humans
10.
J Obstet Gynaecol Res ; 38(4): 724-8, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22413810

ABSTRACT

Adenomyoma is a benign tumor composed of endometrial glands, specialized endometrioid stroma, and smooth muscle. These tumors typically originate within the uterus. An extrauterine adenomyoma is an extremely rare entity. We present the case of a 56-year-old perimenopausal woman with a right adnexal mass, diagnosed histopathologically as an ovarian ligament adenomyoma. This report documents a fourth case of an extrauterine adenomyoma and only the second case in ovarian ligament. The differential diagnosis includes endometrioma, leiomyomatosis peritonealis disseminata, uterus-like mass lesion and extrauterine leiomyoma with entrapped endometrioid glands and stroma. Two theories for the etiology of adenomyoma have been proposed: (i) Müllerian duct fusion defect and (ii) metaplasia.


Subject(s)
Adenomyoma/pathology , Ovarian Neoplasms/pathology , Adenomyoma/diagnosis , Adult , Aged , Diagnosis, Differential , Female , Humans , Middle Aged , Ovarian Neoplasms/diagnosis
11.
Rev Sci Instrum ; 81(10): 10D322, 2010 Oct.
Article in English | MEDLINE | ID: mdl-21033846

ABSTRACT

Absolute bang time measurements with the gas Cherenkov detector (GCD) and gamma reaction history (GRH) diagnostic have been performed to high precision at the OMEGA laser facility at the University of Rochester with bang time values for the two diagnostics agreeing to within 5 ps on average. X-ray timing measurements of laser-target coupling were used to calibrate a facility-generated laser timing fiducial with rms spreads in the measured coupling times of 9 ps for both GCD and GRH. Increased fusion yields at the National Ignition Facility (NIF) will allow for improved measurement precision with the GRH easily exceeding NIF system design requirements.

12.
Rev Sci Instrum ; 81(10): 10D333, 2010 Oct.
Article in English | MEDLINE | ID: mdl-21033853

ABSTRACT

The gamma reaction history (GRH) diagnostic is a multichannel, time-resolved, energy-thresholded γ-ray spectrometer that provides a high-bandwidth, direct-measurement of fusion reaction history in inertial confinement fusion implosion experiments. 16.75 MeV deuterium+tritium (DT) fusion γ-rays, with a branching ratio of the order of 10(-5)γ/(14 MeV n), are detected to determine fundamental burn parameters, such as nuclear bang time and burn width, critical to achieving ignition at the National Ignition Facility. During the tritium/hydrogen/deuterium ignition tuning campaign, an additional γ-ray line at 19.8 MeV, produced by hydrogen+tritium fusion with a branching ratio of unity, will increase the available γ-ray signal and may allow measurement of reacting fuel composition or ion temperature. Ablator areal density measurements with the GRH are also made possible by detection of 4.43 MeV γ-rays produced by inelastic scatter of DT fusion neutrons on (12)C nuclei in the ablating plastic capsule material.

13.
Rev Sci Instrum ; 79(10): 10E527, 2008 Oct.
Article in English | MEDLINE | ID: mdl-19044508

ABSTRACT

The National Ignition Facility (NIF) neutron time of flight (NTOF) diagnostic will measure neutron yield and ion temperature in all NIF campaigns in DD, DT, and THD(*) implosions. The NIF NTOF diagnostic is designed to measure neutron yield from 1x10(9) to 2x10(19). The NTOF consists of several detectors of varying sensitivity located on the NIF at about 5 and 20 m from the target. Production, testing, and calibration of the NIF NTOF detectors have begun at the Laboratory for Laser Energetics (LLE). Operational tests of the NTOF detectors were performed on several facilities including the OMEGA laser at LLE and the Titan laser at Lawrence Livermore National Laboratory. Neutron calibrations were carried out on the OMEGA laser. Results of the NTOF detector tests and calibration will be presented.

14.
Eur J Vasc Endovasc Surg ; 35(4): 413-9, 2008 Apr.
Article in English | MEDLINE | ID: mdl-18063394

ABSTRACT

OBJECTIVE: Myocardial injury, detected by rises in cardiac troponin I (TnI), is common and associated with decreased survival following open AAA surgery. We examined the relationship between perioperative myocardial injury and postoperative outcome. DESIGN: Observational Cohort Study. METHODS: Forty-three consecutive patients who underwent elective open AAA repair were screened for perioperative myocardial injury or infarction using serial TnI measurements (taken on days 1, 3, and 7), ECG and clinical assessment. The primary outcome was survival free of cardiac failure, or myocardial infarction (MI) at follow-up. RESULTS: Twenty (47%) of the 43 patients had a TnI elevation. Of these, 11 (26%) patients met the criteria for MI. At a mean (+/-SD) follow-up of 1.5+/-0.8 years, 12 (28%) subjects had experienced at least one endpoint event. Survival free of cardiac failure or MI was 55% in patients who had TnI rises compared to 87% in those without (P=0.02). Logistic regression revealed that TnI elevation was an independent predictor of outcome with an odds ratio of 5.4 (95% CI 1.2-2.4, P=0.03). CONCLUSION: Perioperative myocardial injury after elective open AAA repair predicts outcome after surgery. Routine TnI measurement should be considered in all patients, especially in those with high cardiovascular risk.


Subject(s)
Aortic Aneurysm, Abdominal/surgery , Heart Failure/etiology , Heart Injuries/etiology , Intraoperative Complications , Myocardial Infarction/etiology , Postoperative Complications , Aged , Aged, 80 and over , Aortic Aneurysm, Abdominal/blood , Aortic Aneurysm, Abdominal/complications , Disease-Free Survival , Female , Follow-Up Studies , Heart Failure/blood , Heart Injuries/blood , Humans , Male , Myocardial Infarction/blood , Predictive Value of Tests , Time Factors , Treatment Outcome , Troponin I/blood
15.
Int J Gynecol Cancer ; 13(6): 909-11, 2003.
Article in English | MEDLINE | ID: mdl-14675334

ABSTRACT

Metastasis to the peripheral skeleton, especially in the face of low stage disease, is rare. This report describes the case of a 77-year-old lady with stage IC disease who underwent curative total abdominal hysterectomy and bilateral salpingo-oopherectomy 2 years prior to presenting with a painless gigantism of her fourth toe. A histologic diagnosis of dedifferentiated endometrial metastasis with sarcomatous differentiation was made following amputation of the toe. Osseous metastasis to bone is discussed in the context of endometrial carcinoma and the literature reviewed. This paper reports the first case of endometrial carcinoma metastasis presenting as gross swelling of a toe.


Subject(s)
Bone Neoplasms/secondary , Carcinoma/secondary , Endometrial Neoplasms/pathology , Endometrial Neoplasms/surgery , Sarcoma/secondary , Toes/pathology , Aged , Amputation, Surgical , Bone Neoplasms/surgery , Carcinoma/surgery , Cell Differentiation , Female , Humans , Sarcoma/surgery , Toes/surgery
16.
J Postgrad Med ; 49(1): 78-80, 2003.
Article in English | MEDLINE | ID: mdl-12865577

ABSTRACT

Immunocompromised individuals are susceptible to pulmonary aspergillus infection, but invasive aspergillus infection is extremely rare in the presence of normal immunity. We report a case of invasive aspergillosis in an immunocompetent 63-year-old male with chronic obstructive pulmonary disease (COPD). Patients with COPD may be at risk for developing pulmonary aspergillus infection, which should be considered as a diagnostic possibility in patients with unresolving pulmonary infection.


Subject(s)
Aspergillosis/complications , Immunocompetence , Lung Diseases, Fungal/complications , Pulmonary Disease, Chronic Obstructive/complications , Aspergillosis/diagnosis , Humans , Lung Diseases, Fungal/diagnosis , Male , Middle Aged
SELECTION OF CITATIONS
SEARCH DETAIL
...