scholarly journals Recovery of Unicellular Cyanobacteria from Nitrogen Chlorosis: A Model for Resuscitation of Dormant Bacteria

2021 ◽  
pp. 1-10
Author(s):  
Niels Neumann ◽  
Sofia Doello ◽  
Karl Forchhammer

Nitrogen starvation induces developmental transitions in cyanobacteria. Whereas complex multicellular cyanobacteria of the order Nostocales can differentiate specialized cells that perform nitrogen fixation in the presence of oxygenic photosynthesis, non-diazotrophic unicellular strains, such as <i>Synechococcus elongatus</i> or <i>Synechocystis</i> PCC 6803, undergo a transition into a dormant non-growing state. Due to loss of pigments during this acclimation, the process is termed chlorosis. Cells maintain viability in this state for prolonged periods of time, until they encounter a useable nitrogen source, which triggers a highly coordinated awakening process, termed resuscitation. The minimal set of cellular activity that maintains the viability of cells during chlorosis and ensures efficient resuscitation represents the organism’s equivalent of the BIOS, the basic input/output system of a computer, that helps “booting” the operation system after switching on. This review summarizes the recent research in the resuscitation of cyanobacteria, representing a powerful model for the awakening of dormant bacteria.

1992 ◽  
Vol 16 (10) ◽  
pp. 640-641
Author(s):  
D. J. Williamson

As we have previously mentioned, the computer itself is simply a collection of chips and circuit boards which are useless without software. Application software is what you do work with, i.e. your word processor or database etc, but the application software itself needs an operating system to run within. The operating system, however, needs something called a basic input/output system (BIOS) to operate. This is software but stored in ROM (Read Only Memory) on chips, and tells the computer what to do when it is first switched on.


2020 ◽  
Vol 4 (3) ◽  
pp. 591
Author(s):  
Maraghi Agil Prabowo ◽  
Ucuk Darusalam ◽  
Sari Ningsih

Many person or institutions are still not aware of security on a server, not only rely on IDS and IPS applications and some firewall applications that we can easily find through internet networks. Special security handling is required on servers that are not related to third-party applications. The security design can be implemented through kernel configuration and tweaks that can be done by relying on the default application of an operating system. These applications are very common and can be found in almost all types of Linux server distributions. And there are still many people who do not maximize the security provided by the BIOS (Basic Input Output System) so that the operating system that has been installed and the data stored therein can be easily accessed by parties who are not responsible. Than as a preventive measure so that the data stored can not be accessed haphazardly by people who are not responsible, provided encryption and the sharing of system files that will be installed on the server. In the security steps for account access, the password that is created will be expired and the user cannot use the old password that he has used before


Author(s):  
Kannan Balasubramanian ◽  
Ahmed Mahmoud Abbas

The protection of Computer Hardware and Software using Cryptographic algorithms has assumed importance in the recent years. The Trusted Computing Group (TCG) has put forward certain conditions to be met by the computer hardware, software and firmware so that the devices may be considered trusted. The Trusted Platform Module is a hardware device that will authenticate the code modules contained in the Basic Input/Output System (BIOS) of a computer to ensure that the Computer System starts in a trustworthy state. This device can also protect against Memory Management attacks including Buffer Overflows and Memory Pointer attacks.


2019 ◽  
Vol 24 (35) ◽  
pp. 160
Author(s):  
Enrique Solana Suárez ◽  
Elsa Gutiérrez Labory

<p>La utilización del render como simulador de realidad y transformador del imaginario arquitectónico es el asunto que pretendemos desarrollar en el contexto del cambio de paradigma gráfico de la representación arquitectónica actual. Jugamos con las palabras, la BIOS, Basic Input / Output System (Sistema Básico de entrada y salida), y conjugamos el acrónimo del nombre de un conocido sistema operativo (OS), que definimos en su versión tercera (3.0) existiendo dos versiones anteriores (1.0 y 2.0). La fonética DesBIOS acerca la palabra “desvío” que significa un cambio de vía, de ruta, que es lo producido. Ha existido un desplazamiento del uso del render, construyendo un encadenado de transformación, esto constituye las diferentes versiones que pasamos a explicar: DesBIOS 1.0. IMITACIÓN Operaciones digitales de render para producir simulación de materiales. DesBIOS 2.0. FABRICACIÓN Render desencadena producción de nuevos materiales de apariencia digital. DesBIOS 3.0. ESPACIALIDAD La utilización de elementos con apariencia digital, transforma la imagen espacial en aspecto digital. El sector profesional asume tales cambios, propiciando la creación de nuevos materiales por la industria de la construcción a través del diseño arquitectónico, avanzando así hacia la obtención de apariencias emuladoras de la representación digital en la configuración la construcción de los espacios.</p>


Author(s):  
R. W. Kerr ◽  
H. P. Lie ◽  
G. L. Miller ◽  
D. A. H. Robinson

2002 ◽  
Author(s):  
J. Newport ◽  
C. Roark
Keyword(s):  

2014 ◽  
Vol 1073-1076 ◽  
pp. 2700-2703
Author(s):  
Lei Jiang ◽  
Shou Zhong Hu ◽  
Xiao Xiao Xu

This paper investigates the run of environmental protection industry input-output model. A new mathematic method is applied to study this kind of singular input-output system. With this new method, we need not convert singular systems into general linear systems. A sufficient stability condition under which an environmental protection industry input-output model is stable is proved. This condition is in the form of linear matrix inequality and can be easily tested by computers.


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