Microstructural Origins of the Corrosion Resistance of a Mg-Y-Nd-Zr Alloy Processed by Powder Bed Fusion - Laser Beam.

Magnesium alloys are biocompatible, biodegradable and have the ability to promote bone ingrowth, making them ideal candidate materials for replacing auto- and allografts in future treatments of large bone defects. Powder bed fusion-laser beam (PBF-LB) additive manufacturing of these alloys would further allow for the production of complex structures, optimized for bone grafting. However, the corrosion rates of structures processed by PBF-LB remain too high.

An Enhanced Understanding of the Powder Bed Fusion-Laser Beam Processing of Mg-Y-Nd-Zr (WE43) Alloy through Thermodynamic Modeling and Experimental Characterization.

Powder Bed Fusion-Laser Beam (PBF-LB) processing of magnesium (Mg) alloys is gaining increasing attention due to the possibility of producing complex biodegradable implants for improved healing of large bone defects. However, the understanding of the correlation between the PBF-LB process parameters and the microstructure formed in Mg alloys remains limited. Thus, the purpose of this study was to enhance the understanding of the effect of the PBF-LB process parameters on the microstructure of Mg alloys by investigating the applicability of computational thermodynamic modelling and verifying the results experimentally.

Release of Side-Chain Fluorinated Polymer-Containing Microplastic Fibers from Functional Textiles During Washing and First Estimates of Perfluoroalkyl Acid Emissions.

The quantity and composition of fibers released from functional textiles during accelerated washing were investigated using the GyroWash method. Two fabrics [polyamide (PA) and polyester/cotton (PES/CO)] were selected and coated with perfluorohexane-based side-chain fluorinated polymers. Fibers released during washing ranged from ∼10 to 500 μ with a similar distribution for the two textile types.

Impact of a formal breastfeeding education program.

Purpose: To investigate whether implementation of a formal breastfeeding education program including a breastfeeding protocol, a resource guide, and educational presentations would have an impact on knowledge, comfort level, and attitudes toward breastfeeding among healthcare providers, and on amount of exclusive breastfeeding at our hospital.

Design And Methods: Quasi-experimental study that included a survey to obtain a preintervention baseline measurement and a postintervention measurement 6 months after the implementation of the formal breastfeeding education program. The sample was obstetricians, pediatricians, and nurses who interact with breastfeeding mothers at our hospital.

[Results of percutaneous radiotherapy of localized prostatic carcinoma (author's transl)].

Analysing preliminary results of percutaneous radiotherapy on 79 patients with localized prostatic carcinoma, the uncorrected five-year survival rate of all patients was 67.3%, that in stage O, A and B 89.5% and that of patients in stage C and D 64.

Epidemiological events surrounding a paralytic case of poliomyelitis in Sweden.

A case of clinical poliomyelitis occurred in Sweden in January 1977; it was the first indigenous case in Sweden since 1962. This incident was of particular interest as it provided an opportunity to study the spread of virus in a cluster of unvaccinated persons and in individuals more or less fully vaccinated with inactivated vaccine. The patient excreted wild type 2 virus and the same type was isolated from 25 other individuals, all of whom were close contacts of virus excretors.

Ureteral replacement with a new prosthesis.

A new flexible silicone ureteral prosthesis has been developed and implanted by a new technique in 20 miniature pigs. The improved implantation technique and the results are described. All prostheses remained firmly attached in their position and drained the upper urine collecting system adequately during an observation period up to 12 mos.

[Value of lymphography in teratoid testicular tumors (author's transl)].

In 72 patients with malignant testicular tumors lymphograms were reviewed and correlated with the microscopic findings of the resected lymphnodes. In 55 patients (76%) the roentgenographic diagnosis was confirmed by histology. In 6 patients lymphography was false positive as microscopic examination of the resected lymphnodes showed.

[Urinary calculi in children (author's transl)].

From a total of 274 children with urinary calculi, 192 cases were analyzed. 63% of these were male. In 19% a familiar disposition was noticed.

[Instrumental urological diagnostic procedures in infancy and childhood (author's transl)].

Instrumental investigations with catheters, bougies and endoscopes are important to diagnose urological diseases in children. Possiblities of the instrumental procedures and the value of endoscopy in the diagnosis of vesico-ureteral reflux are demonstrated.

[Benign and malignant tumors of the prostate (author's transl)].

Etiology, symptoms, diagnosis and treatment of carcinoma of the prostate and benign prostatic adenoma are discussed. In prostatic adenoma the treatment of choice is either open surgery or transurethral resection. Conservative medical treatment has not been successful.

[Ureteroureterostomies: indications and results (author's transl)].

Thirteen unilateral ureteroureterostomies and twenty-five transureteroureterostomies (TUU) were performed since 1968. In 22 of these, a transureteroureterocutaneostomy (TUUC) was done. Indications, operative procedures, results and complications are discussed.

Results of 89strontium therapy in patients with carcinoma of the prostate and incurable pain from bone metastases: a preliminary report.

The therapeutic application of 89strontium for the relief of pain in 11 cases of carcinoma of the prostate with skeletal metastases is reported. A significant clinical improvement could be observed in 8 of the 11 patients with generalized osseous metastases of prostatic carcinoma after the application of 30 muCi. 89strontium per kg.

[Embryonal rhabdomyosarcoma of the urinary bladder in childhood. Report of five own cases].

Malignant lesions of the bladder in infancy and early childhood arise from mesenchymal tissue. Among the mesenchymal tumors embryonal rhabdomyosarcoma is more common in young children than in adults. The gross appearance of rhabdomyosarcoma of the bladder is typically that of polypoid grapelike clusters of tissue, termed "sarcoma botryoides".

[Anastomoses of the urinary tract for treatment of duplicated ureters (author's transl)].

Anastomoses between the kidney pelves or the ureters are excellent operative procedures to correct duplications of the urinary tract in distinct cases. Heminephrectomy may be avoided, when only one of the ureters is affected and the parenchyma of both portions of the kidney is intact. Indications are megalureter, recurrent refluxes, ureteroceles and ectopic ureteral orifice.