The Santa Helena Dam on Compressible Foundation

The Paper describes the performance of a 28 m high compacted earthfill dam for water supply in Northeast Brazil. For mainly economic reasons, the dam was founded, in part, over soft to very soft silty clays to a depth exceeding 8 metres. Large diameter sand drains were provided to accelerate consolidation in the foundation during construction. Maximum construction settlements of approximately 240 cm were recorded. Results of settlement of spillway structures, pore pressure measurements in the fill and long term settlements, are described in this paper. Transverse cracking of fill occurred as a result of large deformations in the compressible sediments. The cracks were repaired, and the dam is currently operating satisfactorily

Погляд анестезіолога на періопераційні особливості ВІЛ-інфікованих пацієнтів

Currently, HIV infection is becoming epidemic. More than 42% of HIV-infected people in the world are women of childbearing age. With the onset of antiretroviral therapy, chemoprophylaxis during pregnancy, and planned cesarean section, the risk of perinatal HIV transmission decreases to 1–2%. However, various side effects such as anemia, neutropenia, thrombocytopenia, fatty liver dystrophy, toxic hepatitis, acute pancreatitis, increased serum transaminases, changes in biochemical parameters of liver function, impaired glucose tolerance, and hypocoagulation may occur in the context of antiretroviral therapy. This poses to the anesthesiologist a number of new tasks to ensure patient safety during the perioperative period.В настоящее время ВИЧ-инфекция приобретает характер эпидемии. Более 42% ВИЧ-инфицированных в мире – это женщины фертильного возраста. С началом применения антиретровирусной терапии, химиопрофилактики во время беременности, а также планового кесарева сечения – риск перинатальной передачи ВИЧ снизился до 1–2%. Однако на фоне проведения антиретровирусной терапии могут возникать различные побочные эффекты, такие как анемия, нейтропения, тромбоцитопения, жировая дистрофия печени, токсический гепатит, острый панкреатит, повышение уровня сывороточных трансаминаз, изменение биохимических показателей функции печени, нарушение толерантности к глюкозе, гипокоагуляции. Это ставит перед анестезиологом целый ряд новых задач по обеспечению безопасности пациентки в периоперационном периоде.У даний час ВІЛ-інфекція набуває характеру епідемії. Понад 42 % ВІЛ-інфікованих у світі – це жінки фертильного віку. З початком застосування антиретровірусної терапії (АРВТ), хіміопрофілактики під час вагітності, а також планового кесаревого розтину – ризик перинатальної передачі ВІЛ знизився до 1–2 %. Однак на тлі проведення АРВТ можуть виникати різноманітні побічні ефекти, такі як анемія, нейтропенія, тромбоцитопенія, жирова дистрофія печінки, токсичний гепатит, гострий панкреатит, підвищення рівня сироваткових трансаміназ, зміна біохімічних показників функції печінки, порушення толерантності до глюкози, гіпокоагуляція. Це ставить перед анестезіологом цілий ряд нових завдань щодо забезпечення безпеки пацієнтки в періопераційному періоді

Pain management in obstetrics and gynecology

The problem of acute postoperative pain is present throughout the lifetime of surgery and, unfortunately, does not lose its relevance today. Inadequate pain control in the postoperative period leads to negative consequences. Multimodal analgesia is currently the method of choice for postoperative anesthesia. The basis is the prescription of paracetamol (Infulgan®) in combination or without NSAIDs with the addition of methods of regional analgesia and, in case of insufficient effect, the use of opioid analgesics lies in the basisi of this method. Choosing one or another scheme of multimodal analgesia is determined, above all, is due to the invasiveness of the surgical intervention performed

TAP-block as a component of multimodal analgesia for postoperative anesthesia in obstetrics and gynecology

Postoperative pain relief is still quite actual problem in medicine, particularly in obstetrics and gynaecology. The most appropriate method of adequate post-operative anesthesia is multimodal analgesia. This article describes the features of multimodal analgesia using TAP-block combined with NSAIDs in obstetric and gynaecological patients, advantages and disadvantages of this combination and our own experience of applying this method in our clinic

Choosing an anesthetic technique in pregnant women with Arnold – Chiari malformation

We want to present the clinical case of a female patient with the asymptomatic Chiari I type malformation, without surgical correction and with concomitant epilepsy who underwent planned C-section under epidural anesthesia. A 29-year old pregnant women on the 39 week of pregnancy entered the maternity hospital for the delivery. It was decided to conduct a planned caesarean section. The epidural anesthesia with 0.75 % solution of the ropivacaine was chosen as the method of anesthesia. The patient did not receive antiepileptic treatment due to her implacable refusal. She underwent surgery and anesthesia well. On the third day after surgery, the patient suffered of a convulsive as sault, which was stopped by intravenous administration of diazepam. This article briefly describes the genetic background, classification, clinical manifestations and treatment tactics for patients with Chiari malformation and the features of C-section anesthesia in pregnant women with this pathology

[Photograph 2012.201.B1002.0367]

Photograph used for a newspaper owned by the Oklahoma Publishing Company

Study of Sb substitution for Pr in the Pr0.67Ba0.33MnO3 system

We study the effect of Sb substitution for Pr in the hole-doped system Pr0.67Ba0.33MnO3 (PBMO) for different doping levels of Sb. The two electrical resistivity transitions observed in the pristine sample PBMO shift to low temperatures on Sb doping with an overall increase in the electrical resistivity. The significant local lattice distortion and the grain boundary effects caused by the large cation size mismatch between Pr3+ and Sb3+ suppresses the double-exchange (DE) interaction and enhances the super-exchange (SE) interaction. The compounds show a significant and increasing value of magnetoresistance at temperatures below the Curie temperature, not expected from the DE model. The Curie temperature decreases with increase in Sb content but the saturation magnetization is little affected by the substitution. The spins, however, stay well aligned in the low-temperature regime. Our X-ray near-edge absorption spectra (XANES) and core level photoemission (XPS) data clearly show the Sb cation to be in +3 state and rule out any possibility of e-doping in our compounds