Periapical Wires Result in Less Curve Correction Than Pedicle Screw Constructs in Idiopathic Scoliosis

Valentine R. Esposito,Brian L. Dial,Robert D. Fitch,Robert K. Lark 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.6

Study Design: Retrospective study. Purpose: The objective of this study was to compare percent correction between apical and periapical pedicle screw (PS) and sublaminar wire constructs for Cobb correction and coronal balance correction. Overview of Literature: The current gold standard for deformity correction in adolescent idiopathic scoliosis (AIS) are PS constructs. Sublaminar wires provide an alternative means of fixation when PS fixation cannot be safely performed. Two previous studies have compared percent curve correction between sublaminar wires and PSs, with conflicting conclusions. Methods: The study was a retrospective review of Lenke type 1 curves with minimum follow-up of at least 1 year. Cases were divided into two groups: constructs using apical/periapical sublaminar wires (SL group) versus PS only constructs (PS group). Percent Cobb correction and coronal balance were compared between the two groups at 1 year. A multivariable regression model was used to determine the impact of apical/periapical wires on percent Cobb correction and coronal balance at 1 year when accounting for additional variables. Results: The cohort included 71 patients who were predominantly female (80.2%), with average age of 14.2 years. Only 21 (29.5%) of constructs utilized apical/periapical sublaminar wires. There was a significant difference in percent Cobb correction at 1 year for the PS and SL groups (70.26% vs. 60.09%, p=0.05). No difference was observed in overall coronal balance. A multivariable model revealed that apical/periapical wires were negatively associated with percent Cobb correction at 1 year (coefficient=−8.49, p=0.023), while total implant density of the construct was positively associated with correction (coefficient=24.2, p<0.001). Conclusions: Use of PSs in the apical and periapical zones resulted in improved percent Cobb correction at 1 year in patients with AIS Lenke type 1 curves. Sublaminar wires remain a useful surgical option and result in equivalent coronal balance compared to PSs.

Acquired diaphragmatic hernia after hepatectomy and liver transplantation in adults and children: A case series and literature review

Valentine Martin,Emilie Gregoire,Sophie Chopinet,Olivier Scatton,Remi Dubois,Antoinette Lasseur,Jerome Dumortier,Olivier Boillot 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.4

Backgrounds/Aims: Acquired diaphragmatic hernia is a rare complication following liver surgery in adult and pediatric patients. This study aims to describe main features occurring in adult and pediatric patients after liver surgery and report an up-date review of the literature. Methods: All adult and pediatric patients who were diagnosed with postoperative acquired diaphragmatic hernia in Lyon and Marseille University Hospitals were included in this study. Diagnosis, clinical, radiologic, and therapeutic data were analysed retrospectively from medical papers and/or electronic records. Results: Thirteen adults with a median age of 50 years (range, 30–67 years) and 5 children aged 2.4 years (range, 0.9–4 years) were diagnosed with acquired diaphragmatic hernia after a median time of 65.1 (range, 1.8–244.7) and 2 (range, 0.33–10.9) months, respectively, following surgeries (5 live-donor right hepatectomies, 5 right and 1 left hepatectomies for tumors and cysts, and 2 whole liver transplantations in adults; and 5 liver transplantations with left lateral section in children). Eleven patients presented digestive and/or thoracic symptoms whereas seven were asymptomatic and diagnosed by routine imaging follow-up. All patients were re-operated with a median delay of 2.4 months (range, 0–25.3 months) for adults and 1 day (range, 0–2 days) for children. Two recurrences resulted in a secondary surgical repair. Conclusions: Acquired diaphragmatic hernia is a rare and potentially serious event after liver surgery. Recognition and surgical repair of this particular complication should be considered in the setting of unexplained abdominal and/or thoracic symptoms. Preventive measures should be taken intraoperatively.

Identification of heavy metals source within selected active dumpsites in southeastern Nigeria

Valentine Ifenna Onwukeme,Victor Chukwuemeka Eze 환경독성보건학회 2021 환경독성보건학회지 Vol.36 No.2

Discriminating contaminant sources is crucial for pollution control. The study aimed at identifying the source(s) of heavy metals in active dumpsite soils from selected areas in Southeastern Nigeria using statistical tools. The dumpsites were Enyimba dumpsite Aba (dumpsite-1), Okpuno-Egbu dumpsite Nnewi (dumpsite-2), Rice mill dumpsite Abakaliki (dumpsite-3) and Nekede dumpsite Owerri (dumpsite-4) in Abia, Anambra, Ebonyi and Imo State respectively. After standard sampling, elemental analysis was carried out using an energy dispersive x-ray fluorescence spectrometer; Chromium (Cr), Manganese (Mn), Cobalt (Co), Iron (Fe), Nickel (Ni), Copper (Cu), Zinc (Zn), Arsenic (As), Lead (Pb) and Cadmium (Cd) were quantified and results showed they were present in high concentrations above control and standard values set by the National Environmental Standards and Regulations Enforcement Agency (NESREA) and the Food and Agriculture Organization of the United Nations (FAO) / World Health Organization (WHO). Metals investigated exhibited variable correlations among themselves suggesting potential multi-element contamination, while soil organic matter (OM) and pH displayed both significant positive and negative influence on the metal availability in the studied soils. Test of significance of the observed correlation were positive and significant (r > 0.9 at p < 0.05/0.01) for Cr/Co, Cr/Fe, Mn/Co, Co/Fe, Cu/Zn, Zn/Pb, Cu/As, Cu/Pb, Zn/As, As/Pb in dumpsite-1; in dumpsite-2, only Ni/Cu; in dumpsite-3, Fe/OM and Cd/OM while in dumpsite-4,Co/Fe, Cu/As, Cu/Pb, Zn/Cd, Ni/OM, and As/Pb. Hierarchical cluster analysis (HCA) and Principal component analysis (PCA) extracted two to three components/groups based on square Euclidean distance and eigenvalues > 1, confirming sources to be from organic pigments in plastics, scrap metals and incinerated biodegradable wastes. This study concludes that statistical methods can provide a scientific basis for monitoring heavy metals accumulation in dumpsite soils.

Gender And Social Policy: Family Law and Women’s Economic Citizenship in the Middle East

Valentine M. Moghadam 한국행정학회 2005 International Review of Public Administration Vol.10 No.1

This article examines the gendered nature of social policy and its evolution since the 1950s in the Middle East and North Africa (MENA). It argues that the MENA regions experience with development and social policy, and the gender dynamics of these processes and policies, were greatly influenced by the imperatives of state- and nation-building, by the characteristics of the regional oil economy, and by the rentier and neopatriarchal nature of the states. The article also draws attention to how family law as a social policy has had implications for social development and for womens economic citizenship. While analyzing the specificities of the gender/social policy regime for the region as a whole, it highlights and compares the cases of Iran, Jordan, and Tunisia.

액체 방사선 폐기물 처리에 관한 새로운 접근

(Valentine Sergienko),(Valentine Avramenko),(Victor Gluschenko),(Veniamin Zheleznov),(Vladimir Vasilevsky) 경희대학교 지구환경연구소 1995 지구환경논문집 Vol.6 No.-

학술발표회초록 - 특강 ( 촉매 및 반응공학 (1) )

VALENTINE D . STYTSENKO 한국화학공학회 1993 춘계학술발표회 Vol.- No.-

재소한인들의 문학활동과 한국어교육

이왈렌찐(Valentine Lee) 이중언어학회 1991 이중언어학 Vol.8 No.1

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방사성 액체폐기물 처리를 위한 흡착 기술 개발 및 실증 실험

Sergienko Valentine,Avramenko Valentine,Gluschenko Victor,Marinin Dmitry,Chervonetzkiy Denis,Zheleznov Veniamin 한국원자력산업회의 1998 원자력산업 Vol.18 No.7

Rheological characterization of BCC and FCC structures in aqueous diblock copolymer liquid crystals

Connor S. Valentine,Lynn M. Walker 한국유변학회 2019 Korea-Australia rheology journal Vol.31 No.4

Low molecular weight, amphiphilic diblock copolymers in selective solvent exhibit complex phase behavior and macroscopic properties that affect the processing and application of these materials. The mechanical properties of the crystalline phases seen in concentrated solutions are dependent on nanoscale structure and sample history. The goal of this study is to characterize macroscopic properties and thermal history effects of lyotropic liquid crystals in aqueous diblock copolymer solutions. Rheological temperature ramps are used to characterize three aqueous concentrations of diblock copolymer [Brij-58®, C16H33(CH2CH2O)20OH]. Between these three samples the order-disorder transitions (ODTs) for BCC and FCC are accessible in addition to the order-order transition (OOT) between BCC and FCC. These transitions are distinguished using rheology. Frequency sweeps are performed across a range of temperatures and parameterized with a loglinear fit to the phase angle data to extract the crossover frequency. We find that a single frequency sweep does not distinguish BCC and FCC structures. By normalizing the temperature with respect to the ODT, we are able to use a series of frequency sweeps to distinguish characteristic trends in the response of BCC and FCC structures to thermal history.

Competition of Hub Ports: A Comparison between Europe and the Far East

( Vince F. Valentine ),( R. Gray ) 한국해운물류학회 (구 한국해운학회) 2002 해운물류연구 Vol.35 No.-

Competition between ports can be said to be at an unparalleled stage in its evolution from the small port of pre-industrialisation serving a local community to the present day hub ports serving many countries perhaps hundreds of miles apart. Ports are by their very nature immovable objects that require advanced planning sometimes decades ahead. It is therefore not surprising that port efficiency ranks high amongst stakeholders` main priorities. Thus with the increase competition also comes an increase in the need to calculate port efficiency. Numerous studies have been conducted on port efficiency, some made using the assessment of productivity based upon output per worker (De Monie 1987). output per wharf (Frankel 1991) whilst others use production functions (Kim & Sachis 1986 & De-Neufville and Tsunokawa 1981). This paper will use a technique known as Data Envelopment Analysis (DEA) to calculate the relative efficiency of container ports using output by size of the port. Martinez-Budria et al (1999) and Tongzon (2001) conducted research using DEA on Spanish and Australian ports respectively. This paper will focus on the regions of Europe and the Far East, comparing efficiency with organisational structure, ownership and location factors.