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SAC - Springer Nature

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Last Updated: 19 July 2022

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Should the processus vaginalis sac be opened or closed in pediatric herniotomy? A two-center cohort study

Inguinal hernia repair is one of children's most common procedures. In neonates and older children, it has not been determined if the open or the closed hernia sac preparation process is superior. Methods Retrospective investigation of inguinal hernia repair in children at two large hospitals include all cases. To compare open vs. closed hernia sack preparations, cases with secondary open preparations were excluded, while propensity score matching was carried out. Inguinal hernia repair was repaired in total 2476 cases. In 3. 8 percent of all cases, the most common postoperative complication was recurrence. Compared to the open hernia sac preparation process, the closed preparation process resulted in significantly reduced procedure time and lower recurrence rates in premature neonates and older children. Conclusions It appears that closed hernia sack planning is more effective than open concerning speed and recurrence.

Source link: https://doi.org/10.1007/s00383-022-05145-8


Increased Concentrations of Atherogenic Proteins in Aneurysm Sac Are Associated with Wall Enhancement of Unruptured Intracranial Aneurysm

The visualization of wall structures can be shown by current MR-vessel wall imaging of unruptured intracranial aneurysms. The aneurysm wall upgrade was attributed to atherosclerotic remodeling of the aneurysm wall, as well as infiltration of inflammatory cells, possibly leading to rupture. This research sought to see if the luminal concentrations of atherosclerotic proteins in the aneurysm sac were related to rise wall thickness in VWI. In UIAs with AWE compared to those without AWE, delta differences between anti-oxidized low-density lipoprotein antibody, small dense LDL, and lipoprotein [Lp] were significantly higher. The delta Lp was positively related to AWE in multivariate logistic regression analysis. Increasing amounts of atherogenic proteins in the aneurysm sac were significantly related to wall construction of UIAs. Future studies examining the effect of drugs for atherosclerosis on the atherogenic proteins in the aneurysm sac and, subsequently, the wall enhancement are warranted.

Source link: https://doi.org/10.1007/s12975-021-00975-5


Wettability and Rheological Behavior of Low Ag Lead-Free SAC/Graphene and Cobalt-Graphene Nanocomposite Solder Paste

In connection with the wettability and rheological properties of low-Ag lead-free SAC0307 solder paste, the effects of dopant nanoparticles, graphene nanosheets, and cobalt decorated-graphene nanosheets were investigated. Phase identification of the solder bulk and interface of the solder and copper substrate was carried out by X-ray diffraction and energy-dispersive X-ray spectroscopy by X-ray diffraction and energy-dispersive spectroscopy. Because of the nonmetallic nature of GNSs, during the reflow soldering, GNSs floated away and separated from the solder bulk during the reflow soldering process due to their poor density and ineffective wetting by the molten tin. However, CoGNS nanoparticles improved wettability and fluidity of the solder's coat due to the increased active absorption surface on the copper substrate, as well as the increased active absorption surface. In the solidification range, the fefs of solder including CoGNSs was noticeably higher than that of solder without GNSs.

Source link: https://doi.org/10.1007/s11661-022-06707-0


Enhancing QS – SAC – OCDMA networks capacity via 2D spectral/polarization OZCZ coding technique based on modified Pascal’s triangle matrix

This paper presents a new 1D Optical Zero Correlation Zone code for wireless communications networks based on Pascal's triangle matrix for wireless Quasi Synchronous Optical Code Division Multiple Access networks. In the zero correlation zone, the most common source of bit error in SAC-OCDMA systems, the code has good auto and cross correlation capabilities, as well as the reduction of the Multiple Access Interference.

Source link: https://doi.org/10.1007/s11082-022-03865-8


Surgical management of endolymphatic sac tumor: classification, outcomes and strategy. A single institution’s experience

Purpose: To investigate the endolymphatic sac tumor resections and outline our involvement in ELST surgical management. Methods Retrospective examination of consecutive patients who underwent resection of ELSTs at our hospital between 1999 and 2019 was a success. Type-I ELST is ready to resection using a transmastoidal technique, and subtetal petrosectomy is required for the resection of type-III ELST type-III ELST. All type-I ELSTs did not experience recurrence and underwent surgical intervention, although all type-II ELSTs did not. type-III and type-III ELST resections are different between type-I and type-II: type-III is suitable for transmastoidal therapy with the preservation of facial nerve, while type-III ELST raises the surgical risk and recurrence, while type-III ELST's subtune process and recurrence are the same, while type-IIII ELST'ste ELST and type-IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII.

Source link: https://doi.org/10.1007/s00405-022-07447-y


A comparison of hernia sac ligation versus invagination in Lichtenstein tension-free mesh hernioplasty: does the type of hernia play a role in outcomes?

Generally speaking, general surgeons have long debated the indirect hernia repair of the indirect hernia repair. Although hernial sac high ligation is a time-honoured technique in groin hernia surgery, non-ligation/invagination is gaining attention. In patients undergoing Lichtenstein mesh hernioplasty, this research was designed to compare the effects of hernia sac ligation and invagination. In both groups, the potential relationship between the hernial defect size and postoperative early pain was investigated. Methods of Participation In this prospective randomized study, patients with indirect inguinal hernia were enrolled in an elective LMH under spinal anesthesia. Patients were classified according to European Hernia Society criteria and were randomly assigned into two groups, HL and non-HL/invagination. Mean VAS scores were significantly higher in the HL group at 6 and 12 h postoperatively, and VAS scores were much higher in the ligation group in EHS 3 hernias p. m.

Source link: https://doi.org/10.1007/s10029-022-02637-3

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions