An innovative seismic isolation system, the Friction Pendulum System (FPS), offers improvements in strength, versatility and ease of installation as compared to previous systems. Moreover, approach several inherent performance benefits not available before. The FPS uses geometry gravity achieve desired results. It is based on well known engineering principles pendulum motion, constructed materials with demonstrated longevity resistance environmental deterioration. desirable characteristics...

A shake‐table study of the friction‐pendulum isolation system, installed in a six‐story, quarter‐scale, 52‐kip model structure, is presented. Two bearing materials are studied, one with peak friction coefficient 0.075 and another 0.095. In both cases, system has rigid‐body mode period 1 sec. The isolated structure found to be capable withstanding strong earthquake forces different frequency content. tests El Centra motion, sustains, without any damage, ground acceleration six times greater...

Seismic isolation in the United States is gaining wide acceptance as an attractive and alternate means to upgrade historic structures seismically with minimal disturbance architecturally significant features. One important historic-landmark structure that underwent such Ninth Circuit U.S. Court of Appeals building located San Francisco, which suffered damage during 1989 Loma Prieta earthquake was declared unsafe for further occupancy. The present paper summarizes comprehensive approach...

Hemp ( Cannabis sativa L.) is commonly grown for the medicinal secondary metabolites produced by pistillate inflorescences. Micropropagation a valuable method of propagating hemp plants because aseptic process and production true-to-type propagules. The cultivar TJ’s CBD was used series experiments to compare media inputs practices clonal micropropagation hemp. For stage I, shoot tips harvested from stock that were in growth chamber less endogenous contamination newly established cultures...

In the 1977 manual of recommended practice for design fixed offshore platforms (2), American Petroleum Institute (API) stipulated more stringent seismic requirements than it had in past. Earlier criteria were based on an elastic strength approach, and levels forces compa:rable to those used important onshore structures. The new recommendations require a platform remain stable under rare intense earthquake motions capable imposing displacements twice considered using earlier criteria.

In prior research, older adults were found to be less responsive social slights than younger adults, but the mechanisms behind such effects have remained unclear. The present study examined age differences in susceptibility deleterious of exclusion and investigated explanatory role cognitive socioemotional variables. Forty (aged 22–39) 40 58–89) played a modified version "Cyberball," virtual ball-tossing game, which they initially included by 2 other players progressively excluded subsequent...

The behavior of one-sixth scale tubular steel frame specimens employing x-bracing for resisting cyclic loads is studied experimentally. imposed displacement applied in a quasi-static manner simulate the effects intense ground motoins due to an earthquake. An offshore tower designed wave and earthquake conditions appropriate southern California served as prototype test frames. paper reports hysteretic frames braces under simulated seismic conditions.

This paper presents the process for establishing and validating design properties of Triple PendulumTM seismic isolation bearings which were utilized to achieve superior performance New San Bernardino Court facility. The analysis parameters nonlinear elements used in model representing bearing confirmed through a prototype test program specification completed during construction document phase. was developed considering ASCE 7-05 Chapter 17 requirements preliminary structural results...

<p>Despite significant advances in seismic-resistant design codes for fixed-based, ductile structures, the recurring disruption of medical services and loss hospital functionality following major earthquake disasters, due to both structural nonstructural damage, underline need implementing enhanced structure criteria cutting-edge technologies – with seismic isolation as leading protection strategy reliably achieve resiliency these essential facilities. A brief overview past failures...

<p>Based on proven successful performance of select seismically isolated building and infrastructure projects under moderate to severe earthquakes around the world, present paper provides a series recommended design criteria special considerations targeting Continued Functionality structures. The recommendations offered by authors for structures include inter-story drift limits, floor spectral acceleration response modification factors, other key parameters protected structure,...

<title>Abstract</title> Who we choose to befriend is highly personal, driven by idiosyncratic preferences about other individuals, including sensory cues. How does a person’s unique evaluation of others’ body odor affect friendship formation? Female participants took part in speed-friending event where they made judgments potential (FP) following 4-minute live interaction. Prior and the event, judged FP these women based solely on <italic>diplomatic</italic> (including daily perfume/hygiene...

Friction Pendulum bearings have been extensively tested for different environmental conditions and loadings applicable to bridges. Data are presented from various test programs, spanning six years, including several hundred shake table compression-shear tests. Shake tests of bridge models were used verify dynamic performance the seismic isloation system. Results reported decks mounted on flexible piers rigid abutment supports, types ground motions, standard Caltrans motion spectra near fault...

Applications of the American Seismic Isolator Standard “SIS” are summarized. The SIS is only construction standard that specifies design criteria for retaining functionality hospitals after earthquakes. limits in-structure accelerations and deformations. Earthquake data shows maximum can be tollerated retain functionaluity Adana Elazig hospital complexes retained 100% severe earthquakes occurred in Turkey 2023 2020. These resulted 55,000 fatalities 236 health care facilities losing...