ojs2 has produced an error Message: WARNING: fopen(/var/www/html/plugins/jurnalebook/usageStats/usageEventLogs/usage_events_20240529.log): failed to open stream: Permission denied In file: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 437 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "fopen(/var/www/html/plugins/jurnalebook/usageStats/usageEventLogs/usage_events_20240529.log): failed to open stream: Permission denied", "/var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php", 437, Array(8)) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 437 Function: fopen("/var/www/html/plugins/jurnalebook/usageStats/usageEventLogs/usage_events_20240529.log", "ab") File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 295 Function: UsageStatsPlugin->_writeUsageEventInLogFile(Array(16)) File: (unknown) line (unknown) Function: UsageStatsPlugin->logUsageEvent("UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/plugins/generic/usageEvent/UsageEventPlugin.inc.php line 108 Function: HookRegistry->call("UsageEventPlugin::getUsageEvent", Array(7)) File: (unknown) line (unknown) Function: UsageEventPlugin->getUsageEvent("TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 332 Function: HookRegistry->call("TemplateManager::display", Array(5)) File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: flock() expects parameter 1 to be resource, boolean given In file: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 438 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "flock() expects parameter 1 to be resource, boolean given", "/var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php", 438, Array(9)) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 438 Function: flock(False, 2) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 295 Function: UsageStatsPlugin->_writeUsageEventInLogFile(Array(16)) File: (unknown) line (unknown) Function: UsageStatsPlugin->logUsageEvent("UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/plugins/generic/usageEvent/UsageEventPlugin.inc.php line 108 Function: HookRegistry->call("UsageEventPlugin::getUsageEvent", Array(7)) File: (unknown) line (unknown) Function: UsageEventPlugin->getUsageEvent("TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 332 Function: HookRegistry->call("TemplateManager::display", Array(5)) File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: assert(): Assertion failed In file: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 443 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "assert(): Assertion failed", "/var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php", 443, Array(9)) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 443 Function: assert(False) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 295 Function: UsageStatsPlugin->_writeUsageEventInLogFile(Array(16)) File: (unknown) line (unknown) Function: UsageStatsPlugin->logUsageEvent("UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/plugins/generic/usageEvent/UsageEventPlugin.inc.php line 108 Function: HookRegistry->call("UsageEventPlugin::getUsageEvent", Array(7)) File: (unknown) line (unknown) Function: UsageEventPlugin->getUsageEvent("TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 332 Function: HookRegistry->call("TemplateManager::display", Array(5)) File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: fclose() expects parameter 1 to be resource, boolean given In file: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 445 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "fclose() expects parameter 1 to be resource, boolean given", "/var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php", 445, Array(9)) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 445 Function: fclose(False) File: /var/www/html/plugins/generic/usageStats/UsageStatsPlugin.inc.php line 295 Function: UsageStatsPlugin->_writeUsageEventInLogFile(Array(16)) File: (unknown) line (unknown) Function: UsageStatsPlugin->logUsageEvent("UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "UsageEventPlugin::getUsageEvent", Array(7)) File: /var/www/html/plugins/generic/usageEvent/UsageEventPlugin.inc.php line 108 Function: HookRegistry->call("UsageEventPlugin::getUsageEvent", Array(7)) File: (unknown) line (unknown) Function: UsageEventPlugin->getUsageEvent("TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/plugins/HookRegistry.inc.php line 89 Function: call_user_func(Array(2), "TemplateManager::display", Array(5)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 332 Function: HookRegistry->call("TemplateManager::display", Array(5)) File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: Cannot modify header information - headers already sent by (output started at /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php:381) In file: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php At line: 340 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "Cannot modify header information - headers already sent by (output started at /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php:381)", "/var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php", 340, Array(7)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 340 Function: header("Content-Type: text/html; charset=utf-8") File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: Cannot modify header information - headers already sent by (output started at /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php:381) In file: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php At line: 343 Stacktrace: File: (unknown) line (unknown) Function: PKPApplication->errorHandler(2, "Cannot modify header information - headers already sent by (output started at /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php:381)", "/var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php", 343, Array(7)) File: /var/www/html/lib/pkp/classes/template/PKPTemplateManager.inc.php line 343 Function: header("Cache-Control: no-store") File: /var/www/html/pages/index/IndexHandler.inc.php line 73 Function: PKPTemplateManager->display("index/journal.tpl") File: (unknown) line (unknown) Function: IndexHandler->index(Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPRouter.inc.php line 362 Function: call_user_func(Array(2), Array(0), Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220 Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False) File: /var/www/html/lib/pkp/classes/core/Dispatcher.inc.php line 134 Function: PKPPageRouter->route(Object(Request)) File: /var/www/html/lib/pkp/classes/core/PKPApplication.inc.php line 178 Function: Dispatcher->dispatch(Object(Request)) File: /var/www/html/index.php line 69 Function: PKPApplication->execute() Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) PHP/5.6.40 DB Driver: mysql DB server version: 5.5.68-MariaDB
Protech Biosystems Journal

Protech Biosystems Journal

Journal TitleProtech Biosystems Journal
InitialsProtech
Frequency2 issues per year (June & December)
DOIprefix 10.31764 by 
Print ISSNXXXX-XXXX
Online ISSN2809-4425
OAI Addresshttp://journal.ummat.ac.id/index.php/protech/oai
Editor-in-ChiefMuanah
StatusNot-Accredited
Contactprotech.ummat@gmail.com | +62 818-0785-3137
PublicationJune & Desember
PublisherUniversitas Muhammadiyah Mataram

Protech Biosystems Journal is a peer-refereed open-access journal which has been established for the dissemination of state-of-the-art knowledge in the field of Agricultural Enginering (Agricultural Mechanization, waters and land resources Engineering, Energy,  Bioprocess and Postharvest Technology) and related subjects in this field. All submitted manuscripts will be initially reviewed by editors and are then evaluated by a minimum of two reviewers through the double-blind review process. This is to ensure the quality of the published manuscripts in the journal. 


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