Two simple comments regarding coronavirus.

Two thought provoking comments related to understanding the problems with the coronavirus are presented.

Ambulatory monitoring unmasks hypertension among kidney transplant patients: single center experience and review of the literature.

Background: Disagreements between clinic and ambulatory blood pressure (BP) measurements are well-described in the general population. Though hypertension is frequent in renal transplant recipients, only a few studies address the clinic-ambulatory discordance in this population. We aimed to describe the difference between clinic and ambulatory BP in kidney transplant patients at our institution.

That antibiotics does not destroy virus does not mean that it does not help a human having virus.

In the defending activity of the body there always is a fight against different bacteria. By helping against the bacteria, antibiotics lets the forces of the body be more oriented against the virus.

Vertically polarizing undulator with the dynamic compensation of magnetic forces for the next generation of light sources.

A short prototype (847-mm-long) of an Insertion Device (ID) with the dynamic compensation of ID magnetic forces has been designed, built, and tested at the Advanced Photon Source (APS) of the Argonne National Laboratory. The ID magnetic forces were compensated by the set of conical springs placed along the ID strongback. Well-controlled exponential characteristics of conical springs permitted a very close fit to the ID magnetic forces.

Cruelty as the "medicine" treating an unbalance in the development of the brain's hemispheres.

A neurophysiological cause for the cruelty expressed by the Nazis during the Holocaust is suggested, as well as certain tests for the adult population intended to reveal such a social danger. The cause is seen as an unbalance in the development of the brain's hemispheres. It is assumed that this unbalance can occur in a nation which is under an extremely intensive stress of intellectual (cultural) development, which might be, for example, because of technological competition between nations/countries.

APS Insertion Devices: Recent Developments and Results.

The Advanced Photon Source (APS) now has a total of 23 insertion devices (IDs). Over two-thirds of them are installed on the storage ring. The installed devices include 18, 27 and 55 mm-period undulators; an 85 mm-period wiggler; a 16 cm-period elliptical multipole wiggler; and many 33 mm-period undulators.

Exponential gain and saturation of a self-amplified spontaneous emission free-electron laser.

Self-amplified spontaneous emission in a free-electron laser has been proposed for the generation of very high brightness coherent x-rays. This process involves passing a high-energy, high-charge, short-pulse, low-energy-spread, and low-emittance electron beam through the periodic magnetic field of a long series of high-quality undulator magnets. The radiation produced grows exponentially in intensity until it reaches a saturation point.

Observation of self-amplified spontaneous emission and exponential growth at 530 nm.

Experimental evidence for self-amplified spontaneous emission (SASE) at 530 nm is reported. The measurements were made at the low-energy undulator test line facility at the Advanced Photon Source, Argonne National Laboratory. The experimental setup and details of the experimental results are presented, as well as preliminary analysis.

High-gain harmonic-generation free-electron laser.

A high-gain harmonic-generation free-electron laser is demonstrated. Our approach uses a laser-seeded free-electron laser to produce amplified, longitudinally coherent, Fourier transform-limited output at a harmonic of the seed laser. A seed carbon dioxide laser at a wavelength of 10.

Measurements of emittance and absolute spectral flux of the PETRA undulator at DESY Hamburg.

The first synchrotron radiation beamline using a 4 m-long undulator at the 12 GeV storage ring PETRA delivers hard X-ray photons usable up to 300 keV. The photon intensity is measured on an absolute scale in the energy range between 16 and 60 keV and compared with calculated intensities. The experimental set-up described is also used to measure the horizontal and vertical emittance of the source.

Soft x-ray instrumentation and its applications at the advanced photon source.

Knowledge of the intermediate energy range from 0.5-4 keV, bridging the "soft" and "hard" x-ray regions, is relatively underdeveloped. However, recent developments in the techniques of microscopy and magnetic circular dichroism have emphasized the need to operate in this energy range for microelectronic, biological, and materials science related experiments.

Acute gastroenteritis due to double infection with enteropathogenic Escherichia coli or Salmonella and another bacterial pathogen.

Two enteric bacterial pathogens were concomitantly isolated from the feces of 18 infants less than 6 months of age admitted to the Assaf Harofeh Medical Center over a 7-year period. In all but two patients stool cultures grew enteropathogenic Escherichia coli, six of serogroup 0119. The other organisms cultured were Shigella, Salmonella, Campylobacter jejuni and Aeromonas hydrophila.