Stripping Technique Research Articles

Source structures at Pre-Miocene level as deduced by gravity stripping

ABSTRACT The lowermost portion of the sedimentary section in Gulf of Suez basin is mostly of low resolution and hardly interpret. This may be attributed to the bad seismic reflection that stops at a certain limit and fails to reach the deep settings, or due to non-coverage of boreholes. Herein, the gravity data was reinterpreted utilizing the stripping technique as an alternative tool to overcome the seismic failure. The process simply consists in calculating the gravity effects of the shallow rock-units and removing them from the Bouguer map, then in analyzing the remaining gravity. The ordinary seismic analysis was performed to control the geometry of the Miocene–Post Miocene formations, and density was driven from boreholes. Further analyses were done on the stripped map to obtain details about the deep sources. Generally, the study suggests a complex structure at Pre-Miocene level more than that of Miocene. It delineates two main troughs; Miocene basin to the east and Pre-Miocene basin (involves three sub-basins) to the west, separated by a structural ridge, all are northwesterly oriented. The basement is very disturbed by cross-faults, with no evidence support presence of igneous intrusions along. Two different forces (NW-SE compression and NE-SW tension) affected the region.

Tracking and separation of relativistic ions using Timepix3 with a 300 μm thick silicon sensor

The response of a Timepix3 detector (256 × 256 pixels, pixel pitch 55 μm) with a 300 μm thick silicon sensor was studied in relativistic charged particle beams at the Super-Proton-Synchrotron at CERN . The detector was irradiated at different angles in a 400 GeV/c primary proton beam and in a mixed beam created by a 330 GeV/c Pb beam hitting a beryllium target. We present and discuss energy deposition spectra and particle track features for relativistic particles of different stopping power. The proton data shows that a relative energy resolution of approximately 9 % can be achieved. Analysis of deposited energy spectra and tracks in the detector produced by heavier ions are carried out with the aim to investigate the capabilities of the Timepix3 detector for decomposing the mixed beam. Using spectrum stripping technique by iterative Landau curve fitting charge discrimination could be done up to Z = 7 for impact angle of 60 degrees (with respect to the sensor normal). For smaller impact angles the particle charge separation is decreased due to the saturation of the pixel electronics (∼600 keV) . Previous works describing the 3D track reconstruction for minimally ionizing particles (Z = 1) were extended in the present work by adding the methodology of heavier ions track reconstruction in 3D.

Lumbosacral lipoma: traction bipolar coagulation dissection

Objective. To analyze the technique of traction bipolar coagulation dissection (strip technique), to assess its effectiveness and safety in surgery for removal of lumbosacral lipomas of various types. Material and Methods. The study involved 39 patients (the follow-up period was 1 year) operated on for removal of lumbosacral lipoma using the method of traction bipolar coagulation dissection. The 3D models of lumbosacral lipomas before and after surgery were created based on neuroimaging data, the neurological status before and after surgery was assessed using the SBNS scale, and the results of intraoperative neurophysiological monitoring were analyzed. Results. A decrease in the volume of lumbosacral lipomas by 95.0 % was achieved in all patients, the volume after surgery was less than 1 cm 3 (p < 0.01). Positive dynamics of neurologic status according to the SBNS scale was observed in 94.9 % of patients (p < 0.01). Motor evoked potentials remained unchanged throughout surgery in most patients. No false negative results of intraoperative neurophysiological monitoring were obtained. Conclusion. Traction bipolar coagulation dissection is an effective and safe method of surgical treatment of lumbosacral lipomas allowing the safest and most complete removal of lipomatous tissue, as well as improving the functional state of patients.

An evolution in sentinel node mapping for cervical cancer.

The technique of sentinel lymph node (SLN) biopsy has emerged as an alternative to complete pelvic lymphadenectomy to establish lymph node status in early stage cervical cancers. Traditional lymph node stripping techniques are associated with high rates of patient morbidity, such as lymphedema. For the majority of patients who are free of lymph node metastases this morbidity seems unnecessary if an alternative technique can achieve the same accuracy.

The benefit of fibrosa layer stripping technique during minimally invasive aortic valve replacement for calcified aortic valve stenosis-A randomized controlled trial.

Fibrosa layer stripping (FLS) technique is a new approach to remove the calcified aortic valve. In this study, we aimed to assess the effectiveness of the FLS technique by comparing it with the conventional technique in minimally invasive aortic valve replacement (MIAVR). A prospective, single-center, randomized controlled trial was conducted at Beijing Anzhen Hospital. Seventy patients diagnosed with severe calcific aortic stenosis were randomly assigned to undergo FLS (n = 35) or conventional (n = 35) technique to debride calcified aortic valve. Preoperative profile, procedural parameters, and postoperative outcomes were analyzed. No significant difference was observed in the preoperative profile between the two groups. Compared with the conventional technique, the FLS technique had a significantly higher indexed effective orifice area and lower mean gradient. Moreover, the FLS technique was associated with significantly reduced aortic cross-clamp time (41 [38-44] vs. 56 [51-60] min, p < .001), cardiopulmonary bypass (CPB) time (63 [56-69] vs. 81 [75-84] min, p < .001), and operative time (148 [141-156] vs. 173 [169-180] min, p < .001). Lastly, the length of intensive care unit stay (1.2 ± 0.4 vs. 1.5 ± 0.8 days, p = .041) and hospital stay (5.3 ± 0.6 vs. 6.0 ± 1.4 days, p = .020) was significantly reduced in the FLS group compared with those in the conventional group. FLS technique is effective in removing calcified tissue during MIAVR and is associated with shorter cross-clamp time and CPB time, and better hemodynamic performance than the conventional technique.

Cytokine concentration across the stratum corneum in atopic dermatitis and healthy controls

Tape stripping is a promising technique for assessment of epidermal biomarkers in inflammatory skin diseases. However, to facilitate its implementation in the clinical practice, a thorough validation regarding sampling strategy is needed. Knowledge of biomarkers variation in concentration across stratum corneum is scarce. Therefore, this study aimed to assess the variability of cytokines across stratum corneum using tape stripping technique by consecutive application of 21 adhesive tapes (D-squame) to lesional and non-lesional skin from 15 patients with atopic dermatitis (AD) and 16 healthy controls. Concentration of cytokines (IL-1α, IL-1b, IL-5, IL-18, IFN-γ, CCL17, CCL22, CCL27, CXCL8, CXCL10, TNF-α, TSLP, VEGFA) was determined in five different depths, using multiplex immunoassay. Comparing tape 4 with tape 21, no cytokine changed significantly in concentration in AD lesional skin. In AD non-lesional skin a small decrease was found for CCL17, CXCL8 and CXCL10. For healthy controls, a decrease was found for IL-1a, IL-1b, VEGFA and an increase for IL-18. Differences were found between AD skin and healthy control skin. Concentration of cytokines was stable across stratum corneum, indicating that sampling of only one tape from the stratum corneum is reliable in reflecting the overall cytokine milieu. Differences between AD and healthy skin confirm robustness of tape stripping for measuring cytokine levels.

Radial Solutions for p-Laplacian Neumann Problems Involving Gradient Term Without Growth Restrictions

We study the existence of radial solutions for the p-Laplacian Neumann problem with gradient term of the type $$\begin{aligned} \left\{ \begin{array}{l} -\Delta _{p}u=f(|x|,u,x\cdot \nabla u)\quad \text {in} ~\varOmega ,\\ \displaystyle \frac{\partial u}{\partial \mathbf{n} }=0\quad \text {on}~ \partial \varOmega , \end{array} \right. \end{aligned}$$ where $$\Delta _pu=\text {div}(|\nabla u|^{p-2}\nabla u)$$ is the p-Laplace operator with $$p>1$$ , $$\varOmega \subset \mathbb {R}^N(N\ge 2)$$ is a ball. We do not impose any growth restrictions on the nonlinearity. By using the topological transversality method together with the barrier strip technique, the existence of radial solutions to the above problem is obtained.

Eye bank versus surgeon prepared DMEK tissues: influence on adhesion and re-bubbling rate

AimTo investigate the difference in adhesion and rebubbling rate between eye bank and surgeon prepared Descemet membrane endothelial keratoplasty (DMEK) tissues.MethodsLaboratory and clinical retrospective comparative interventional case series. Research corneal...

Acute effect of kinesiology taping on muscle strength, tissue temperature, balance, and mobility in female patients with osteoarthritis of the knee

Aim The data on the action mechanism of the kinesiology taping (KT) used to reduce pain and inflammation, provide mechanical support, and facilitate or inhibit muscles in the treatment of osteoarthritis (OA) of the knee are contradictory. The aim of this study was to investigate the acute effects of KT treatment on muscle strength, tissue temperature, balance, and mobility in female patients diagnosed with OA of the knee. Methods Thirty-four female patients (age: 60.26 ± 6.51 years) who were diagnosed with Kellgren–Lawrence Grade 2 OA according to the American Rheumatology Association (ACR-1986) criteria were included in the study. Patients who were performed KT with the superior Y, inferior Y, and U strip techniques were evaluated before and 30 min after taping. Muscle strength was assessed with a handheld dynamometer, tissue temperature with a thermal camera, balance with a monoaxial balance platform, and mobility the Timed Up and Go (TUG) test. Results After taping, there was a significant increase in the muscle strength during both extension and flexion (p<.001, p=.005). There was no statistically significant difference in the tissue temperature and balance scores before and after taping (p=.219, p>.05). There was a significant improvement in TUG scores, which evaluated mobility, after taping (p=.033). Conclusions Although KT treatment seems to be ineffective on tissue temperature and balance in the short term in patients with OA of the knee, we are of the opinion that patients should be included in the treatment program due to its positive effects on muscle strength and mobility.

Simultaneous detection of trace Pb(II), Cd(II) and Hg(II) by anodic stripping analyses with glassy carbon electrode modified by solid phase synthesized iron-aluminate nano particles

This paper presents an ultrasensitive simultaneous detection procedure for heavy metals (HMs) namely lead; Pb(II), cadmium; Cd(II) and mercury; Hg(II). A bimetallic iron-aluminate (Fe-Al) mixed metal-oxide nano-composite (MMON) on glassy carbon electrode was synthesized using novel solid phase synthesis method. An ammonium ion exchange reaction in solid reagent with simultaneous ammonia evolution produced unique rod-shaped Fe-Al MMON without any solvent addition. The chitosan-mediated electrode (Ch-MMON/GCE) was used to simultaneously detect three most harmful HMs using three anodic stripping techniques namely, cyclic voltammetry (CV), linear sweep voltammetry (LSV) and differential pulse voltammetry (DPV). Three distinct stripping peaks were obtained with concentrations in parts per trillion (ppt) using each of these methods using acetate buffer (0.1 M, pH = 4.5). Obtained LODs for Cd(II), Pb(II), and Hg(II), being 1.678 ppt, 0.301 ppt and 0.658 ppt, respectively by CV whereas LSV gave 1.791 ppt, 0.798 ppt and 2.205 ppt respectively DPV yielded 0.068 ppt, 0.034 ppt and 0.053 ppt, respectively. As observed, DPV was found to be the most sensitive method even though all LOD values were well below the drinking water permissible limits stipulated by WHO. Possible mechanism of ultrasensitive HM detection by the Ch-MMON/GCE was discussed. The modified electrode was successfully used to measure HMs present in water of river Ganges water eliciting significant performance and reliability.

Sliding Strip Technique: A Preservation Approach for Hyperprojected Noses.

Sliding Strip Technique: A Preservation Approach for Hyperprojected Noses.

Modification of varicose vein stripping to achieve immediate compression in a theatre setting with minimum personnel

Compression bandaging is a key aspect following stripping for varicose vein surgery. With adequate compression, formation of subcutaneous hematoma can be prevented and thereby prevent revascularisation of the hematoma leading to recurrence of varicose vein. Various techniques exist to provide compression. Our modification provides an easy alternative to achieve immediate compression following stripping and is especially useful in a setting where staff is very limited. Materials required include a 10 cm width gauze bandage, 1% lidocaine with epinephrine, and number 1 silk suture in addition to the conventional tools for open varicose vein surgery. The gauze bandage is introduced along with the stripper which is passed from groin to below knee. The bandage is kept in the subcutaneous tunnel till perforator ligation, groin wound closure and application of compression bandage. The gauze bandage is removed through a small window within the compression stocking below the knee and the wound closed in a single layer. From 2005 to 2020, 410 patients underwent varicose vein surgery with the modified technique. Of these, 1 patient developed complication secondary to hematoma formation which was managed conservatively. Our modification of the varicose vein stripping technique is shown to be a cost effective and simple technique which provides immediate compression and effortlessly facilitates haemostasis till wounds are closed and compression stockings applied. in various literatures.

Ultra-thin two-dimensional nanosheets for in-situ NIR light-triggered fluorescence enhancement

Ultra-thin two-dimensional (2D) nanosheets of Zn-based metal -organic framework (MOF) were prepared from the precursor [Zn(bpydc) (H2O)·H2O]n (bpydc = 2,2′-bipyridine-5,5′-dicarboxylate), by using a liquid phase ultrasonic stripping technique. The atomic thickness and the abundant oxygen atoms making the nanosheets are well dispersed in various solvents, exhibiting unique fluorescence responses to solvents of different polarities. Adding on, by loading on the ytterbium ion (Yb3+)-sensitized hexagonal phase up-converting nanoparticles (UCNPs, sodium yttrium fluoride (NaYF4): 20 mol% Yb3+, 1 mol% erbium (Er3+ ions)) on the surfaces of nanosheets, the in-situ near infrared (NIR) light (980 nm) triggered luminescence enhancement has been observed, suggesting the favorable application foreground in biomedical science, super-capacitors, and electronic devices.

Parâmetros produtivos e de qualidade de cultivares de cafeeiros na região do Alto Paranaíba, Minas Gerais, Brasil

A escolha da cultivar a ser implantada em uma lavoura cafeeira deve ser baseada na produtividade, qualidade e tamanho dos grãos, visando agregação de valor ao produto. Neste contexto, objetivou-se avaliar os parâmetros produtivos e de qualidade de cultivares de cafeeiros na região do Alto Paranaíba, Minas Gerais. O experimento foi realizado na Universidade Federal de Uberlândia, Campus Monte Carmelo, no delineamento em blocos casualizados (DBC), com cinco blocos e oito tratamentos representados por cultivares de Coffea arabica L. Em julho de 2019, foi realizada a colheita por meio de derriça manual no pano, sendo avaliadas as seguintes características: produtividade (sacas beneficiadas de 60 kg ha-1), percentual de frutos verde, verde cana, cereja, passa e seco, rendimento (L de “café da roça” para compor uma saca de 60 kg de café beneficiado), renda (relação entre o peso do café beneficiado e o de café seco em coco, em porcentagem), análise sensorial de acordo com o protocolo da Specialty Coffee Association of America (SCAA) e classificação quanto ao tamanho e formato de grãos. As cultivares Acaiá Cerrado MG-1474, Mundo Novo IAC 379-19, Catuaí Vermelho IAC 99 e Topázio MG-1190 se destacaram por apresentarem maiores produtividades e renda. Não houve diferença significativa entre as cultivares para rendimento, obtendo-se média de 380,6 L de “café da roça” para compor uma saca de 60 kg beneficiada. O maior percentual de frutos cerejas, passas e secos foram detectados, respectivamente, nas cultivares Mundo Novo IAC 379-19, Bourbon Amarelo IAC J10 e Acauã Novo (média de 7,78%), Mundo Novo IAC 379-19 e Bourbon Amarelo IAC J10 (média de 21,9%) e Acaiá Cerrado MG-1474, Catuaí Vermelho IAC 99, Topázio MG-1190, IAC 125 RN e Paraíso MG H 419-1 (média de 91,2%). Todas as cultivares apresentam pontuação de bebida entre 79 e 81 pontos. A cultivar IAC 125 RN obteve maior percentual de grãos de peneira alta, enquanto as cultivares Topázio MG-1190 e Acauã Novo apresentaram maior quantidade de grãos moca miúdo.

Fertility Outcome after CO2 Laser Vaporization versus Cystectomy in Women with Ovarian Endometrioma: A Comparative Study

To assess the postoperative likelihood of conception in patients with endometriomas managed by either CO2 laser vaporization or cystectomy. A retrospective study with prospective recording of data. University hospital. One hundred and forty-two patients with symptomatic endometriomas. Patients underwent a standardized laparoscopic stripping technique (Group 1) or cyst vaporization with CO2 fiber laser (Group 2). Patients wishing to become pregnant were allowed to attempt a spontaneous conception after surgery. If spontaneous conception failed, patients were referred for in vitro fertilization (IVF). The primary objective was to compare pregnancy rates between the 2 groups. The secondary objective was the identification of independent predictors of pregnancy. Thirty-nine women in Group 1 (53.4%) and 39 women in Group 2 (56.5%) desired to conceive after surgery. Three patients (7.7%) in Group 1 became pregnant following donor-IVF and were excluded. Pregnancies were recorded in 72.2% of patients treated with cystectomy and in 74.3% of those managed with CO2 fiber laser (p = .83). Twenty patients (55.6%) in Group 1 and 14 patients (35.9%) in Group 2 conceived spontaneously (p = .08). Among patients who failed spontaneous conception, 21 patients (28%) achieved pregnancy through IVF (Group 1: n = 6, 16.7%; Group 2: n = 15, 38.5%; p = .08). Twenty patients (26.7%) never became pregnant. Age at the time of surgery (odds ratio (OR) = 0.86; 95% Confidence intervals (CI): 0.78-0.96, p = .002) and duration of infertility (OR=0.80; 95% CI: 0.69-0.92, p = .006) were identified as independent indicators for pregnancy. CO2laser-treated endometrioma is associated withpregnancy ratesequalto those observed after cystectomy and favorable IVF outcomes. The one step CO2fiber laser technique may represent a viable alternative to cystectomy.

State-of-the-Art Traditional to the Machine- and Deep-Learning-Based Skull Stripping Techniques, Models, and Algorithms.

Several neuroimaging processing applications consider skull stripping as a crucial pre-processing step. Due to complex anatomical brain structure and intensity variations in brain magnetic resonance imaging (MRI), an appropriate skull stripping is an important part.The process of skull stripping basically deals with the removal of the skull region for clinical analysis in brain segmentation tasks, and its accuracy and efficiency are quite crucial for diagnostic purposes. It requires more accurate and detailed methods for differentiating brain regions and the skull regions and is considered as a challenging task. This paper is focused on the transition of the conventional to the machine- and deep-learning-based automated skull stripping methods for brain MRI images. It is observed in this study that deep learning approaches have outperformed conventional and machine learning techniques in many ways, but they have their limitations. It also includes the comparative analysis of the current state-of-the-art skull stripping methods, a critical discussion of some challenges, model of quantifying parameters, and future work directions.

A cystectomic technique with low risk of rupture for women with benign ovarian cyst

The majority of patients with benign ovarian cysts undergo laparoscopic surgery using both cystectomy and stripping techniques. However, these techniques have difficulty correctly identifying cleavage planes and are prone to cyst rupture. We present a surgical cystectomy technique that correctly identifies the cleavage plane with a low risk of ovarian cyst rupture, even in patients with multicystic ovarian cysts. Cystectomy was performed using Maryland forceps with gentle open and close dissecting motions only. Both the surgeon and assistant handled the ovarian cortex and cyst wall, and soft traction between the cortex and cyst wall as far as the nearby dissection plane without grasping the cyst wall was essential. In patients with multicystic ovarian cysts, making a plane at the notch between cysts decreases the risk of cyst rupture. This technique allows the correct identification of the cleavage plane for dissection and avoids the risk of cyst rupture. Impact Statement What is already known on this subject? The majority of patients with benign ovarian cysts undergo laparoscopic surgery using both cystectomy and stripping techniques. These techniques have difficulty correctly identifying cleavage planes and are prone to cyst rupture. What do the results of this study add? This technique allows the correct identification of the cleavage plane for dissection and avoids the risk of cyst rupture. What are the implications of these findings for clinical practice and/or further research? Our technique might be useful for the preservation of the ovarian reserve because patients in this study had a low proportion of ovarian follicles in the surgical specimen.

A Simple and Fast Skull Stripping Technique for Brain MR Images

A Simple and Fast Skull Stripping Technique for Brain MR Images

Pd/FeP catalyst engineering via thermal annealing for improved formic acid electrochemical oxidation

Thermal annealing is usually employed for performance enhancement of catalysts while the reason is still unclear. Herein, performance improvement of a promising Pd/FeP system via thermal annealing to provide enhanced active sites, as a proof of concept, was demonstrated for the formic acid oxidation reaction. Two kinds of active sites of Pd and Pd@FeP were indicated in Pd/FeP catalyst by the well-recognized CO stripping technique; the low active/unstable Pd sites could be transformed into more active Pd@FeP sites via thermal annealing and electrochemical reduction. The best catalytic activity of annealed Pd/FeP catalyst was 1.6 times of fresh Pd/FeP and 2.8 times of Pd/C catalysts. A maximum catalytic efficiency increased by 65 % was revealed owing to the Pd@FeP active sites formation; as high as 55 % of the initial current was maintained after the accelerated stability test for 1000 cycles. The result helps understand the thermal annealing effect on electro-catalyst performance improvement.

Prevalence of Dal blood type and dog erythrocyte antigens (DEA) 1, 4, and 7 in canine blood donors in Italy and Spain

BackgroundThe aim of this study was to determine the prevalence of Dal, and DEA 1, 4, 7 blood types, in a population of canine blood donors from Italy and Spain. Three hundred and twenty blood donor dogs receiving an annual health evaluation were included in the study. DEA 1 blood type was determined using an immunochromatographic strip technique while Dal, DEA 4 and 7 blood types were determined with polyclonal antisera using agglutination on gel columns.ResultsOut of 320 dogs blood typed 7 (2 Cane Corso and 5 Doberman Pinschers) (2.2%) were Dal negative; 137 (42.8%) were positive for DEA 1; 320 (100%) were positive for DEA 4 and 43 (13.4%) were positive for DEA 7.ConclusionThis study showed a similar prevalence of DEA 1, 7 and 4 to that reported in previous studies in the same, and in different, geographic areas, and provides new data on the prevalence of the Dal blood group in Italy and Spain. There was no significant difference (P = 0.8409) between prevalence of Dal negative blood types found in our population (2.2%) and the prevalence reported in a canine blood donor population from the USA (2.5%). Our study identified Dal negative dogs in a previously tested breed i.e. Doberman Pinschers, but also the Cane Corso breed was found to have Dal negative dogs.