Chick embryos at stages 8 to 9 were treated in ovo with Streptomyces hyaluronidase (SH) to determine whether neurulation occurs normally in embryos depleted of hyaluronic acid, a major component of the extracellular matrix. Open neural tube defects occurred in 60-94% (depending on the particular enzyme batch) of the embryos treated with SH and examined after an additional 24 h of incubation. De...

Self-healing (SH) polymers are responsive polymeric materials that can repair mechanical damage such as cracks in an autonomous fashion. In most SH polymers studies reported to date, crack closure was either unaddressed or achieved by manual intervention. Here, we report a new strategy that utilizes shape memory (SM) to prepare novel SH polymers that are capable of simultaneously closing and re...

The development of SH waveguide probes that can work under extreme conditions (Temperature>500°C, radiation) has opened up the possibility to carry out ultrasonic monitoring using SH waves on plant components that cannot be inspected otherwise. The deployment of such monitoring devices can result in substantial economic benefit by continuously supplying information about the state of a critical...

After the disastrous flood event of 1997 in Poland, the main concern was to upgrade and modernize the existing System of Hydrological Forecasting. The new System of Hydrology (SH) that had to be developed for entire Poland was implemented as an important component of the Emergency Flood Recovery Project, financed by the World Bank. A detailed design was worked out in 2000 and a new SH was elabo...

Methods An axial fat-saturated T1-weighted MRI sequence of the knee of 25 asymptomatic controls and 25 JIA patients was collected, blinded and randomized. The asymptomatic controls were children who underwent MR enterography with IV contrast for unrelated diseases, had no (history of) joint complaints or signs of joint inflammation and gave permission for an additional sequence of the knee. JIA...

Repeated measures of wavefront aberrations were taken along the line-of-sight of seven eyes using two instruments: an objective, cross-cylinder aberroscope (OA) and a Shack-Hartmann (SH) aberrometer. Both instruments were implemented on the same optical table to facilitate interleaved measurements on the same eyes under similar experimental conditions. Variability of repeated measures of indivi...

SYNOPSIS This report was designed to grasp exactly the action of alloxan by the true tolerance test reported by Takeuchi (1961). The action of alloxan is manifested in two different ways depending on the dose; e-k decreased in a smaller dose and increased in a larger dose. The former is named mesoxalic acid-like action and the latter alloxan-like action. The effect of the compounds related with...

Members of the bill¢sh family are highly visual predatory teleosts inhabiting the open ocean. Little is known about their visual abilities in detail, but past studies have indicated that these ¢shes were likely to be monochromats. This study, however, presents evidence of two anatomically distinct cone types in bill¢sh. The cells are arranged in a regular mosaic pattern of single and twin cones...

Climate change in the Southern Hemisphere (SH) polar stratosphere is associated with substantial changes in the atmospheric circulation that extend to the earth’s surface. The mechanisms that drive the changes in the SH troposphere are not fully understood, but most previous hypotheses have focused on the role of atmospheric dynamics rather than that of radiation. This study quantifies the radi...

The three-component reaction of ReS4- (1), H2S, and unsaturated substrates (un = alkene, alkyne) affords the ReV derivatives Re(S)(S2un)(SH)2-. These adducts arise via the addition of H2S to intermediate dithiolates ReS2(S2C2R4)- and dithiolenes ReS2(S2C2R2)-. The species [ReS[S2C2(tms)2](SH)2]-, [ReS(S2C7H10)(SH)2]- (3), and [ReS(S2C2H4)(SH)2]- are prepared according to this route. Similarly, ...