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Improving Receiver Close-In Blocker Tolerance by Baseband Gm-C Notch Filtering

This paper presents a receiver front end with improved blocker handling implemented in a 65-nm CMOS technology. Since close-in blockers are challenging to reject at RF, the receiver features a baseband (BB) notch filter, which effectively sinks close-in blocker current directly from the output of an LNTA and passive mixer structure. The notch-filter frequency can be tuned to match the blocker offs

Comparative treatment planning study for mediastinal Hodgkin’s lymphoma : impact on normal tissue dose using deep inspiration breath hold proton and photon therapy

Background: Late effects induced by radiotherapy (RT) are of great concern for mediastinal Hodgkin’s lymphoma (HL) patients and it is therefore important to reduce normal tissue dose. The aim of this study was to investigate the impact on the normal tissue dose and target coverage, using various combinations of intensity modulated proton therapy (IMPT), volumetric modulated arc therapy (VMAT) and

The role of dopaminergic immune cell signalling in poststroke inflammation

Upon ischaemic stroke, brain-resident and peripheral immune cells accumulate in the central nervous system (CNS). Interestingly, these cells express pattern specific to neurotransmitter receptors and, therefore, seem to be susceptible to neurotransmitter stimulation, potentially modulating their properties and functions. One of the principal neurotransmitters in the CNS, dopamine, is involved in t

Visualizing the included subject : photography, progress narratives and intellectual disability

By examining photographic depictions of subjects labeled as ‘intellectually disabled’, this article theorizes how photography performs the ideological function of producing narratives of historical progression. Recurrent representations of, on the one hand, a dark past of state institutionalization and repression and, on the other hand, the present as a time when intellectually disabled people are

A review of the legal framework in shallow geothermal energy in selected European countries : Need for guidelines

Over the past years, the installations of Shallow Geothermal Energy (SGE) systems are increasing throughout Europe, and it is indicating that a specific and detailed legal framework is necessary. Towards this direction, this paper consists of an overview of legislation issues on SGE at European level, based on concise reviews from fourteen countries, i.e., Croatia, Cyprus, France, Greece, Italy, L

Explicit multipole formulas for calculating thermal resistance of single u-tube ground heat exchangers

Borehole thermal resistance is both an important design parameter and a key performance characteristic of a ground heat exchanger. Another quantity that is particularly important for ground heat exchangers is the internal thermal resistance between the heat exchanger pipes. Both these resistances can be calculated to a high degree of accuracy by means of the well-known multipole method. However, t

Routine laparoscopy for nonpalpable testes?

There are still no accepted criteria for the selection of patients with nonpalpable testes for laparoscopy versus a primary surgical exploration. We here report our experience using routine laparoscopy in such patients. The aim was to determine whether laparoscopy should be the first operative intervention or follow an inguinal exploration. Included in the study were 61 boys with 69 nonpalpable te

Complications of laparoscopy-aided gastrostomies in pediatric practice

Purpose: The aim of this report is to establish the frequency and type of complications of laparoscopy-aided gastrostomy in pediatric practice and to identify patients at risk for postoperative complications. Method: This is a follow-up study of 98 children with nutritional problems including inability to swallow, inadequate calorie intake in neurologically impaired children, patients with cystic

Ulceration in an ileocolic anastomosis treated with ranitidin

The authors report the case of a child born with a gastroschisis and an ileal atresia. After surgery, only 100 cm small bowel and the distal one third of his colon remained. Perianastomotic ulcers developed 6 years later. These were treated successfully with ranitidin, a treatment not previously reported in the literature. The authors conclude that treatment with ranitidin was successful in a pati

Two children with xeroderma pigmentosum developing two different types of malignancies simultaneously

Patients with xeroderma pigmentosum (XP) are highly sensitive to ultraviolet radiation and prone to develop multiple skin malignancies. We report two children under 6 years of age with XP who each developed two histologically different types of malignancies simultaneously. We conclude that it is of importance to be aware of the possibility of multiple malignancies of different types, even in young

Single-puncture laparoscopic gastrostomy in children

An original one-puncture technique of performing laparoscopic gastrostomy is described. The implications are analysed. The results of five operations are presented and the advantages and limitations are discussed in the light of current available methods.

Gastrostomy button causing perforation of the posterior gastric wall

A gastrostomy button complication, not previously reported, is described. The button, with an inflatable balloon, was used for nutrition. The patient had had a gastrostomy for 4.5 y, with the same type of gastrostomy button for the previous 2 y and the same device for 1 y. The tip of the button caused a perforation of the posterior stomach wall, leading to death.

Membranous duodenal stenosis

The experience of our 16 patients treated for membranous duodenal stenosis is reported. Their treatment and course was analysed in a retrospective study. Eight patients were operated on within the first 16 days of life and in the remaining group surgery was performed at 1 month to 4 y of age. The presenting symptom leading to diagnosis was, in all but one case, non-bile-stained vomiting. Associate

Laparoscopy aided gastrostomy in children

Background and Aims: The aim of this report is to describe a method for laparoscopy aided button gastrostomy in children. Material and Methods: The method includes the use of two ports, one umbilical and one subcostal on the left side. The stomach is exteriorized using a grasping forceps in the subcostal port. Under direct vision the gastrostomy button, MIC-KEY®, is inserted into the stomach at th

Nonsuture end-to-end microvascular anastomosis using intravascular stents

The objective of this report is to describe a new method of nonsuture end-to-end microvascular anastomosis. The vessels to be anastomosed are prepared separately before division by inserting a cylinder-shaped intravascular stent into each vessel. The anastomosis is completed after dividing the vessels. The vessels containing the stents are approximated. The anastomosis is then performed by sliding

Laparoscopy for nonpalpable testis in childhood : Is inguinal exploration necessary when vas and vessels are not seen?

A case of bilateral nonpalpable testes is described. Ultrasonography showed no testis. Laparoscopy revealed no intraabdominal testis, vas or vessels. Human chorionic gonadotrophine test suggested the presence of testicular tissue Computed tomography showed a testis present in each inguinal canal. Inguinal exploration confirmed the finding. This case stresses the importance of careful interpretatio

Operative management of duodenal atresia

The management of duodenal atresia (DA) in two Scandinavian pediatric centers is reported. A total of 67 infants with DA were retrospectively analyzed. A high incidence of associated anomalies was present, including Down's syndrome in 40% and cardiac anomalies in 20% of the infants. No immediate postoperative mortality was noted. The operative procedures were duodenoduodenostomy and duodenojejunos