PubMed Journals Articles About "Rodica Elena Petrea Honored Strathmore Lifetime Member" RSS

02:21 EDT 22nd March 2018 | BioPortfolio

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Showing "Rodica Elena Petrea Honored Strathmore Lifetime Member" PubMed Articles 1–25 of 1,900+

Elena: A case of dissociative identity disorder from the 1920s.

In 1930, Italian psychiatrist Giovanni Enrico Morselli described the history, diagnosis, and treatment of his patient Elena. The case of Elena has been considered in literature as one of the most remarkable cases of multiple personality ever published. In fact, before treatment, Elena showed alternating French- and Italian-speaking personalities, with the Italian personality knowing nothing of her French counterparts. After a difficult treatment involving recovered memories of incestuous attacks by her fath...

Application of Fluorescence Lifetime Imaging (FLIM) to Measure Intracellular Environments in a Single Cell.

Fluorescence lifetime imaging (FLIM) has now been used in many bioscience fields, which comes from the quantification of fluorescence lifetime. The procedure for obtaining lifetime images is very similar to that used in fluorescence microscopy. However, obtaining reliable lifetime images requires an understanding of the theory of fluorescence lifetime, principle of FLIM systems, and evaluation procedure of intracellular environments. In this chapter, the materials, methods, and notes on FLIM measurements ha...

Exposure to suicide in the family: Suicide risk and psychache in individuals who have lost a family member by suicide.

The aim of the present study was to compare a sample of Portuguese individuals exposed to suicide in their families with a control group, for lifetime suicidality. This study also evaluated the incremental value of psychache (i.e., extreme psychological pain) in determining suicide risk beyond the contribution associated with having lost a family member by suicide.

Nanoparticle discrimination based on wavelength and lifetime-multiplexed cathodoluminescence microscopy.

Nanomaterials can be identified in high-resolution electron microscopy images using spectrally-selective cathodoluminescence. Capabilities for multiplex detection can however be limited, e.g., due to spectral overlap or availability of filters. Also, the available photon flux may be limited due to degradation under electron irradiation. Here, we demonstrate single-pass cathodoluminescence-lifetime based discrimination of different nanoparticles, using a pulsed electron beam. We also show that cathodolumines...

Fellows honored for volunteerism and humanitarianism.

“Pimping”: Time-honored educational tradition or relic of the past?

Mary H. McGrath, MD, MPH, FACS, to be honored with Distinguished Philanthropist Award.

Field-induced lifetime enhancement of photorefractive gratings in a Mn:Fe:KTN crystal.

We report the lifetime enhancement of light-induced refractive index grating by applying a bias field during writing. In comparison with the lifetime of about 10 hours of the photorefractive grating prepared without a bias field, the lifetime of the grating with a 4  kV/cm bias field can be prolonged to 7.5 years, which is obtained from the dynamic behavior of grating visualized and monitored with digital holographic microscopy. The higher the bias field is applied, the longer the dark decay time of gra...

Observation of ultralong valley lifetime in WSe2/MoS2 heterostructures.

The valley degree of freedom in two-dimensional (2D) crystals recently emerged as a novel information carrier in addition to spin and charge. The intrinsic valley lifetime in 2D transition metal dichalcogenides (TMD) is expected to be markedly long due to the unique spin-valley locking behavior, where the intervalley scattering of the electron simultaneously requires a large momentum transfer to the opposite valley and a flip of the electron spin. However, the experimentally observed valley lifetime in 2D T...

Highly Efficient, Conventional, Fluorescent Organic Light-Emitting Diodes with Extended Lifetime.

Highly efficient, yellow-fluorescent organic light-emitting diodes with a maximum external quantum efficiency exceeding 25.0% and extended lifetime are reported using iridium-complex sensitizers doped in an exciplex host. Energy transfer processes reduce the lifetime of the exciplex and excitons on the Ir complexes and enable an excited state to exist in a conventional fluorescent emitter, thereby increasing device lifetime. The device stability depends on the location of the excited state.

Lifetime risks of kidney donation: a medical decision analysis.

This study estimated the potential loss of life and the lifetime cumulative risk of end-stage renal disease (ESRD) from live kidney donation.

Lifetime Abuse and Quality of Life among Older People.

Few studies have evaluated the impact of lifetime abuse on quality of life (QoL) among older adults. By using a multinational study authors aimed to assess the subjective perception of QoL among people who have reported abuse during the course of their lifetime. The respondents (N = 4,467; 2,559 women) were between the ages of 60 and 84 years and living in seven European countries (Germany, Greece, Italy, Lithuania, Portugal, Spain, and Sweden). Lifetime abuse was assessed by using a structured questionnair...

Sex and Race Differences in Lifetime Risk of Heart Failure with Preserved Ejection Fraction and Heart Failure with Reduced Ejection Fraction.

Background -Lifetime risk of heart failure has been estimated to range from 20% to 46% in diverse sex and race groups. However, lifetime risk estimates for the two HF phenotypes, HF with preserved ejection fraction (HFpEF) and HF with reduced ejection fraction (HFrEF), is not known. Methods -Participant-level data from 2 large prospective cohort studies, the Cardiovascular Health Study (CHS) and the Multiethnic Study of Atherosclerosis (MESA), were pooled excluding individuals with prevalent HF at baseline....

Time-domain fluorescence lifetime imaging by nonlinear fluorescence microscopy constructed of a pump-probe setup with two-wavelength laser pulses.

We propose a time-domain approach for fluorescence lifetime measurements using nonlinear fluorescence microscopy constructed of a pump-probe setup with two-wavelength laser pulses. Nonlinear fluorescence signals generated by fluorescence reduction due to stimulated emission were detectable through a lock-in technique. Changing the time delay between the two-wavelength pulses enables acquisition of a time-resolved nonlinear fluorescence signal, which directly reflects the fluorescence lifetime of the sample ...

Photoexcited Muon Spin Spectroscopy: A New Method for Measuring Excess Carrier Lifetime in Bulk Silicon.

We have measured excess carrier lifetime in silicon using photoexcited muon spin spectroscopy. Positive muons implanted deep in a wafer can interact with the optically injected excess carriers and directly probe the bulk carrier lifetime while minimizing the effect from surface recombination. The method is based on the relaxation rate of muon spin asymmetry, which depends on the excess carrier density. The underlying microscopic mechanism has been understood by simulating the four-state muonium model in Si ...

Trends in Lifetime Cannabis Use among Czech School-aged Children from 2002 to 2014.

The aim of the study was to examine trends in the prevalence of lifetime cannabis use among the Czech 15-year old students.

Lifetime alcohol intake and risk of non-Hodgkin lymphoma: Findings from the Melbourne Collaborative Cohort Study.

Cohort studies have reported inconsistent evidence regarding alcohol intake and risk of non-Hodgkin lymphoma (NHL), mostly based on alcohol intake assessed close to study enrolment. We examined this association using alcohol intake measured from age 20 onwards. We calculated usual alcohol intake for 10-year periods from age 20 using recalled frequency and quantity of beverage-specific consumption for 37,990 participants aged 40-69 years from the Melbourne Collaborative Cohort Study. Cox regression was perfo...

Labour trafficking: Challenges and opportunities from an occupational health perspective.

In this essay for the collection on Human Trafficking, Exploitation, and Health, Elena Ronda-Perez and colleague discuss ways occupational health services can detect and address labour trafficking.

Lifetime cost for Type 2 Diabetes Mellitus in Singapore.

The mean annual direct medical cost of Type 2 Diabetes Mellitus (T2DM) in Singapore has been found to be SGD 2,034 using the prevalence-based approach but lifetime direct medical cost of T2DM in Singapore remains largely unknown. Our study aims to determine the lifetime direct medical cost attributed to T2DM and provide estimates of potential savings if T2DM can be prevented or delayed.

Member Input: The Challenge of Staffing in Ambulatory Infusion Settings.

The Oncology Nursing Society (ONS) has conducted several member surveys that included questions about staffing but has not established nurse-patient ratios, given the number and complexity of variables that must be considered. The 2016 ONS member survey showed that staffing was the most frequently cited challenge in the practice setting. With the implementation of ONS Communities in 2017, members have the opportunity to network and connect about issues. Staffing in chemotherapy infusion centers has been a f...

BVA Policy Committee welcomes a new member.

Amelia Findon, BVA head of policy, introduces Sally Everitt, the newest member of the BVA Policy Committee.

Potential use of membrane bioreactor to treat petroleum refinery effluent: comprehension of dynamic of organic matter removal, fouling characteristics and membrane lifetime.

This study aims to evaluate membrane bioreactor (MBR) performance in a pilot scale to treat petroleum refinery effluent, and has been primarily focused on (1) investigation of dynamics of organic matter removal; (2) characterization of membrane fouling under real hazardous events; (3) evaluation of the effect of fouling on membrane lifetime; and (4) estimate the membrane lifetime. The results have shown that the MBR was able to effectively reduce COD, NH3-N, turbidity, color, phenol and toxicity, and bring ...

Excited-State Dynamics of a DNA Duplex in a Deep Eutectic Solvent Probed by Femtosecond Time-Resolved IR Spectroscopy.

To better understand how the solvent influences excited-state deactivation in DNA strands, femtosecond time-resolved IR (fs-TRIR) pump-probe measurements were performed on a d(AT)9⋅d(AT)9 duplex dissolved in a deep eutectic solvent (DES) made from choline chloride and ethylene glycol in a 1:2 mole ratio. This solvent, known as ethaline, is a member of a class of ionic liquids capable of solubilizing DNA with minimal disruption to its secondary structure. UV melting analysis reveals that the duplex studied...

Femoral stem incorporating a diamond cubic lattice structure: Design, manufacture and testing.

The current total hip prostheses with dense femoral stems are considerably stiffer than the host bones, which leads to such long-term complications as aseptic loosening, and eventually, the need for a revision. Consequently, the lifetime of the implantation does not match the lifetime expectation of young patients.

Associations between self-reported lifetime history of traumatic brain injuries and current disability assessment in a population sample of Canadian adults.

This study describes the association between history of lifetime traumatic brain injury (TBI) and current disabling functional restrictions among Ontario adults.

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